EPA-AA-TEB-81-5
Effectiveness of Idle Adjustment on Passenger
Cars at Commercial Repair Facilities
by
John C. Shelton
October 1980
Test and Evaluation Branch
Emission Control Technology Division
Office of Mobile Source Air Pollution Control
Office of Air, Noise, and Radiation
U.S. Environmental Protection Agency
-------
Abstract
This paper describes the results of a project on passenger cars to evaluate
the effectiveness of idle adjustment at commercial repair facilities. This
effort involved a total of 222 passenger cars tested by Automotive Testing
Laboratories (ATL) & Automotive Environmental Systems, Inc. (AESI) during 1979
and 1980. These vehicles were a subset of 1225 vehicles tested in St. Louis,
Washington D.C., Phoenix and Los Angeles as part of the FY 77 and FY 79 Pas-
senger -Car Emission Factor Programs. Only vehicles which arrived for testing
without limiter caps were eligible to participate in the survey. After the
complete laboratory test, a contractor employee took each vehicle to a service
station, independent garage or dealer and asked simply that the idle mixture
and speed be adjusted to manufacturer's specifications. Upon return to the
laboratory, the work performed by the facility was evaluated using a
tachometer and garage-type emission analyzer. The sequence was completed when
the contractor's mechanic performed the idle adjustments to the best of his
ability. The data obtained illustrates the inability or unwillingness of the
majority of commercial repair facilities to properly set idle mixtures. The
results of this project point to the need for mechanic training in reducing
vehicle emissions through correct maintenance procedures.
-------
Background
According to the Clean Air Act and its Amendments, the Environmental Pro-
tection Agency (EPA) is required to encourage and implement programs which
will assure that properly maintained vehicles will meet their emission stan-
dards throughout their useful life. Inspection/Maintenance programs are the
primary force behind this effort to control emissions from in-use vehicles
with the work to be performed by the commercial repair industry. It is well
known that a substantial number of in-use vehicles will not meet their emis-
sion standards when tested in an as-received condition (Reference 1 and 2).
One of the major reasons is that the idle mixture and speed has been mal-
adjusted. In order for these vehicles to meet their emission standards, these
adjustments must be made correctly. The typical places for these adjustments
to be made include dealerships, service stations, and independent garages.
Purpose
This study was designed to evaluate the ability of the commercial repair
industry to set idle adjustments to manufacturer's specifications.
Selection and Test Procedures
Vehicles selected for this project were recruited primarily from the FY79
Passenger Car Emission Factor Program. Vehicles which arrived at the con-
tractor's facility missing their idle mixture limiter caps were chosen for
this study. Two hundred and twenty-two such vehicles out of a total of 1225
passenger cars tested were taken to commercial facilities by various persons
in the contractor's organization (secretaries, engineers, technicians, etc.).
The following procedures were employed:
Before leaving the contractor's facility - Vehicle identification information
was recorded on worksheets provided by EPA. Idle readings (CO, HC, RPM) were
also measured and recorded. Any evidence that the vehicle was in a testing
program (e.g., data packets or exhaust connectors) was removed from the ve-
hicle. A repair facility was contacted to set up an appointment to have idle
mixture and speed adjusted. If possible, all adjustments were to be performed
while the driver waited. No reference was made to any affiliation with an
emission testing lab or that this was to be part of an 'EPA study.
At repair facility - The driver requested that the idle mixture and speed be
adjusted to manufacturer's specifications. If questioned why, it was stated
that they had heard that this is a very important adjustment from a number of
standpoints, such as fuel economy and engine performance. If the mechanic
insisted that other maintenance be performed, the driver stated that he wanted
only the idle adjusted at this time to see what difference it made. If the
mechanic said that he did not know how to set it to specifications, he was
asked to set it as best he could. Notes were made (although not in the
mechanic's presence) of any of his comments and actions. Observations
regarding instruments and tools used as well as cost data were also recorded
on the worksheets.
-------
After returning to the contractor's facility - ICO, IHC, and IRPM were mea-
sured and recorded, as were the number of ^ turns necessary to lightly seat
the idle mixture screws. The mixture screw settings were not measured prior
to sending the vehicle to the commercial repair facility in order not to
disturb the as-received settings. Idle parameters were then adjusted to
manufacturer's specifications by contractor mechanics and the location of the
idle mixture screws relative to the lightly seated position was recorded.
ICO, IHC and IRPM were again measured and recorded. New limiter caps were
installed in the center position. The vehicle was then returned to its owner.
Discussion
Idle Test Results - The results of each of the 225 vehicles involved in this
project are listed in the Appendix. The contractor for St. Louis, Washington,
D.C. and Phoenix was Automotive Testing Laboratories (ATL), while Automotive
Environmental Systems, Inc. (AESI) was the contractor for Los Angeles. The
results for each city are summarized below.
St. Louis - Eighty three 1975-1979 model year passenger cars were taken
to commercial repair facilities. The results of these adjustments are
summarized in Figure 1. After adjustment at commercial repair
facilities, idle HC concentration increased by 87% and idle CO increased
by 30%. The engine RPM values, representing the average absolute dif-
ference from manufacturer's specifications, Were essentially unchanged.
The average cost for these adjustments was $4.97. A histogram showing
the number of % turns required for proper adjustment of the idle mixture
screws after return from the commercial repair facility is also included
in Figure 1.
Washington D.C. - Sixty one 1977-1980 model year passenger cars were
taken to commercial repair facilities. Their results are summarized in
Figure 2. After adjustments at commercial repair facilities, idle HC
concentration increased by 23% and idle CO remained unchanged. Again,
the engine RPM values, representing the average absolute difference from
manufacturer's specification were virtually unchanged. The average cost
was $4.67. A histogram showing the number of ^ turns required for proper
adjustment after return from the commercial repair facility is also
included in Figure 2.
Phoenix - Forty eight 1975-1978 model year passenger cars were taken to
commercial repair facilities. The results of these adjustments are
summarized in Figure 3. After adjustment at commercial repair
facilities, idle HC concentration increased by 40% and idle CO decreased
by 7%. The engine RPM values, representing the average absolute dif-
ference from manufacturers specifications, decreased by 28%. The average
cost of these adjustments was $5.32. A histogram showing the number of %
turns required for proper adjustment of the idle mixture screws after
return from the commercial repair facilities is also included in Figure
3.
-------
Los Angeles - Thirty 1975-1978 passenger cars tested in 1979 by Auto-
motive Environmental Systems Inc. as part of the FY 77 Emission Factor
Program are included in this report. These thirty passenger cars were
also taken to commercial repair facilities for adjustments. The results
of these adjustments are summarized in Figure 4. After adjustment at
commercial repair facilities, idle HC decreased by 38% and idle CO de-
creased by 28%. The engine RPM values, representing the difference from
manufacturer's specifications, decreased by 18%. The repair facilities
in Los Angeles appeared to do a much better job than in the other cities.
On the other hand the average cost of repairs in Los Angeles was $16.76.
This is substantially higher than in the other cities. The factors of
cost and quality may be due to California's licensing of mechanics and
repair facilities.
Results of the Federal Test Procedure - Although the Federal Test Procedure
(FTP) was not performed on these vehicles after they returned from the repair
facility, the FTP emissions for the fleet were collected and averaged based on
the presence of limiter caps upon arrival at the laboratory. These averages
are listed in Table 1. The values here indicate that vehicles without
limiter caps have average HC and CO emission levels which exceed those where
the limiter caps are intact.
Conclusions
1. Only minor adjustments would be required to allow most vehicles to pass a
basic I/M test.
2. The commercial repair industry does not currently adjust idle mixture and
speed properly.
3. A lack of training and proper equipment (tachometers and exhaust an-
alyzers) is apparent in the performance of this type of maintenance.
4. In order to conduct successful Inspection/Maintenance programs, some
incentives and a major effort in mechanic training will be required to
ensure that idle adjustments are made properly.
References
1. J. T. White, "An Evaluation of Restorative Maintenance on Exhaust Emis-
sions from In-use Automobiles", SAE Paper 780082, March, 1978.
2. J. C. Shelton, "Effectiveness of Idle Adjustment on Light-Duty Trucks at
Commercial Repair Facilities," EPA-AA-TEB-80-17, June 1980.
-------
Table 1
Emission Levels and Fuel Economy Versus Presence of Limlter Caps
ijimiier
Site Caps on? N
St. Louis
Total /wtd. Avg.
Washington
Total /wtd. Avg.
Phoenix
Yes
No
Yes
No
Yes
No
187
117
304
224
82
306
195
102
HC
1.25
2.60
1.77
1.10
2.16
1.38
0.96
1.47
r ±r -
CO
17.78
34.51
24.22
11.52
31.71
16.93
14.37
20.72
NOx
1.78
2.02
1.87
2.12
1.88
2.06
1.89
2.29
MPG
16.8
15.4
16.3
16.4
15.4
16.1
16.5
15.8
HFET
23.9
23.0
23.6
24.0
23.1
.23.8
23.2
23.0
All J.C ^11 )
IHC ICO
102 0.78
200 2.34
140 1.38
*
*
Total/wtd. Avg. 297 1.14 16.55 2.03 16.3 23.1
Los Angeles Yes 81 1.02 11.92 1.50 16.8 ** 59 0.18
No 95_ 1.85 27.45 2.47 13.6 - 140 1.06
Total/wtd. Avg. 176 1.47 20.30 2.02 15.1 - 102 0.66
* Idle in neutral was not measured in Washington and Phoenix.
** HFET was not run for FY77 Program in Los Angeles.
-------
Figure 1
Effectiveness of Idle Adjustments
at Commercial Repair Facilities
Eighty Three 1975-1979 Cars
St. Louis
300-
200 .
IHC 100 _
(ppm)
0 _
i n J-u
166
2.0_
162
% ICO 1.0_
0.
2.3
.45
1
Before After After
Repair Repair AIL
Before After After
Repair Repair ATL
100-1
100 _
IRPM*
50 »
0 .
* These numbers are the average absolute
difference from manufacturer's specifications
75 _
1
]
iefore
Repair
After
Repair
rercent
Sample 50 -
9
... .i • ...
,.., ,.4 23
After
ATL
0.
•
r 23%
8%
A
39%
vg. Cost $4.97
16% 14%
1
1
Free up to 2.01- 5.01-over
$2.00 5.00 10.00 10.00
Cost of Adjustment
Number
of
cars
20 -
16 J
12 -
Q
"2 4
Leaned
rTU
10
2 0
Richened
Number of Jj turns required for proper adjustment after return from
commercial repair facility
-------
8
Figure 2
Effectiveness of Idle Adjustments
at Commercial Repair Facilities
Sixty one 1977-1980 Cars
Washington D.C.
300n
200 _
IHC 100 _
(ppm)
0 _
209
258
113
3.0
2.0_
% ICO 1.0_
0_
2.5 2.5
.55
1
Before After After
Repair Repair AIL
Before After After
Repair Repair ATL
100-I
100_
IRPM*
50 _
0 .
* These numbers are/the average absolute
difference from manufacturer's specifications
75 _
]
]
59
Before
Repair
69
After
Repair
Percent
of
Sample 50 -
-32
-
After
ATL
0_
31%
72
A\
1
1
26% |
1
1
Tg . COS
26%
t $4.67
10%
1
Free up to 2.01- 5.01-over
$2.00 5.00 10.00 10.00
Cost of Adjustment
Number
of
cars
16-|
12
8
0 -I
0
24
Leaned
8 10
Richened
Number of *s turns required for proper adjustment after return from
commercial repair facility
-------
Figure 3
Effectiveness of Idle Adjustments
at Commercial Repair Facilities
Forty Eijrht 1975-1978 Cars
Phoenix
IHC
(ppm)
30ft.
200 J
100 _
0.
261
186
207
Before After After
Repair Repair AIL
3.0
2.0
% ICO 1.0.
0.
1.4
1.3
.28
J
Before After After
Repair Repair ATI,
100-I
100 _
IRPM*
50 -
0 .
* These numbers are the average absolute
difference from manufacturer's specifications
75 _
]
75
Before
lepair
54
After
Repair
Percent
°f 50
Sample
22
I
, ..._J lt
• ••— • 25
After
ATL
0.
01 "/
1 C\°/
AVJ
11 7
g. Cost $5.32
1
25%
| 13%
1
Free up to 2.01- 5.01-over
$2.00 5.00 10.00 lo.OO
Cost of Adjustment
Number
of
cars
16-
12 -
8 .
o
Richened Leaned
Number of % turns required for proper adjustment after return from
commercial repair facility
-------
10
Figure i,
Effectiveness of Idle Adjustments
at Commercial Repair Facilities
Thirty 1975-1978 Cars
Los Angeles
300-,
200 _
IHC 100 _
(ppm)
0 _
245
163
3.0
2.0_
70 % ICO 1.0_
0
1.9
1.4
.33
1
Before After After
Repair Repair AESI
Before After After
Repair Repair AESI
100 i
100 _
IRPM*
50 _
0 J
* These numbers are the average absolute
difference from manufacturer's specifications
]
]
89
73
75 _
Percent
°f 50
Sample
6
1
iefore After After "
Repair Repair AESI
0_
10%
A-v
20%
rz. Cost $16.
63%
1
1
1
1
7%
1
up,to 10.01 15.01 over
10.00 15.00 20.00 20.00
Cost of Adjustment
Number
of
cars
16 -|
12 '
8 .
4 .
n .
1
202468
Richened Leaned
Number of Jj turns required for proper adjustment after return from
commercial repair facility
-------
G>
Effectiveness of Idle- Adjustments
at Commercial Repair Facilities
Date & Before.
Vehicle Repair Facility Type of
Number Make & Model IHC %ICO IRPM* Facility
Service Person's
Comments
Differences in
After Js Turns of
Repair Facility ' Lab Set Mixture Screws**
Cost IHC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
58/6
6.5* 450
.(7?)
Pk.lf.fs
ft SCfeu/
/-f -for « r i
490 5£ 4-70
-f/o
(e787
,0*
(- 1 30)
r^ Screu/
driver, JTc//^ tJ«S scf- V
/./
90 .
Q-f4er
+10
O
4O, .0$ 650
30 ,05" &oo
O
O ,o3
30 J /450
S>er\//ce
0 ,
,05-
9556
4|
9.50
no
//O -03" ?4o
-8 0
(- So)
9550
O «o4- 680
40 ,05" 730
D
-7 -4
./1 '
X
3528
cfviv€.t
Zoo
40 o 7oo
-8
AVERAGES
IHC %ICO IRPM*
*Number shown in parenthesis is
• the difference in RPM from the
manufacturers specifacations.
(+=greater then,-=less then)
Cost IHC %ICO IRPM* IHC ZICO
Left Right <;»..+.T „ number of jj turns ;
in the- "rich" direction.:
"_" o number of k turns j
in the "lean" direction!
-------
fi/
Da--e & Before
c-hicle Repair Facility Type of
;•_-; ir Makes Model IHC %ICO IRPM* Facility
Effectiveness' of Idle Adjustments
at Commercial Repair Facilities Differences in
57: LDoii After % Turns Of
Service Person's Repair Facility tab Set Mixture Screws**
Comments Cost IKC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
MOBIL
OSei Sc.reuoAn»cr,
WOO fe.
50 .0$" <35"0
-2. M/A
i/vr -
U •
'Lt 5e-P
TDC.—
/SO 3.
•Tas-l-
it sWv«t Xdle Loas sef TOO
,,-ra.cU.ovnefe/"
2.00
4-ZO 4.8 5oo
B
2.00 -i 5be>
0
r7 ^
Ckev,
4,01
(406IL
2.00
?30 /.O 700
-b -
44-
Ed1* Mok
Service
('"Tune -U)
Idle 3eA-
130 .1 9oo
60
(l(
5504
ShiELL
1BO
-Z
JW9
-03 >50
O
Idle a
3.00
70 .1
C-t-iooJ
90 .or '/so
79
QCACO
230
700
SiM
12.00
190
-Z M/A'
7734
170
a
-------
'••• * Before
:le ' • Repair Facility Type of
^ Make & Model IHC %ICO IRPM* Facility
Effectiveness of Idle Adjustments
at Commercial Repair Facilities .Differences in
ST. LOOIS After k Turns of
Service Person's Repair Facility -Lab Set Mixture Screws**
Comments Cost IKC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Concents
su\\
V05
190 6.?
iio O
-H -t,
»O
\
-------
3£=e 5 Before
c-:-icle • Repair Facility Type of
.;u-ber Make & Model IHC %ICO .IRPM * Facility
Effectiveness of Idle Adjustments
at Commercial' Repair Facilities
ST
Service Person's
Comments -
.Differences in
After !j Turns of
Repair Facility 'Lab Set Mixture. Screws**
Cost IHC % ICO IRPM* IHC % ICO IRPM Left Right
Additional
Cooments
,.51
3.7 600 280
C>
2,10
See
HO /.I «70°
41
«'. w
(if 40
Ao 2.H
f
0
'-'-' ;e A
14,0
OHC&
po
?70
2.o
-5- 9»
-3 -
1111.
30
/oo
.(-so)'
(, to .01
loo ,05-
1.70 .05
ho .05- 650
0
-3
IHC %ICO IRPM*
AVERAGES
*Number shown in parenthesis is
the difference in RPM froa the
manufacturers specif acations.
(+=greater then,-=less then)
Cost fHC %ICO IRPM* IHC /SCO
Left Right **"+" = number of"'•• 'r'uv
in the "rich" c:i:'.:•;'.
"-" = r.unber cS -u cuv
in the "lean" di:-ic-.
-------
D2te & • Before
:->.icle ' • Repair Facility Type of
u-ber Makes Model IHC %ICO IRPM* Facility
Effectiveness' of Idle Adjustments
at Commercial Repair Facilities . Differences in
ST. LOlJiS ' After j, Turns of
Service Person's . Repair Facility .Lab Set Mixture Screws**
Comments Cost IKC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
2SD 1.8
1,0
0 O
Ttif
536
(die
^-50
o
-| A/A
Chev
AivA
4-5 580
330 .
scfeu;«iriver
3.00
-6. -
0
CKev
700
-1
147
(-
MecUav.t
l|8o
£0 .7
'03
3.5
./5~ 600
0
-3-4-
Site
13.00
/o .5-50
-i -/e
•cfeaets
0
5.0
>
ff. useof
4-.50
IHC %ICO IRPM*
AVERAGES
*Number shown in parenthesis is
the difference in RPM from the
manufacturers specifac.itions.
(+=greater thcn,-=less then)
'Cost' IHC %ICO IRPMft'lHC 'SCO
Left Right ftftii+n = numbcr of ;.. run.
in the "rich" Jiv^cL;
"-" = nutter o,f lj cv.-. ••.
in the "lean" Jir'Jcu:.
j . «t • •
-------
(p
Date &
Before
.-hide • Repair Facility Type of
ur.ber Make & Model IHC%ICO .IRPM* Facility
Effectiveness of Idle Adjustments
at Commercial Repair Facilities
ST.
Service Person's
Comments
.Differences in
After !< Turns of
Repair Facility Lab Set Mixture.Screws**
Cost IKC ZICO IRPM* IHC % ICO IRPM Left Right
Additional
Conments
7773
o
Ke
30
30 -IT
froi
0 .
(+*)
Ske\\
o
^
$220)
-f/
3 ,
•fao Oc-W t
4
ttJWS
1,50
\&0 1.5
go
o
SW
5,oo
30? X
-3 -3
6)
C/ka
0
877
19? .86
270 /O
-JT yf A
0
Tn c*c»ve
673
(+«*>)
180
0
0 .03
30
MO
0
31 .
IHC %ICO IRPM*
230 ^2 760
550
?40
*Number shown in parenthesis is
the difference in RPM from the
manufacturers specifacations.
(H-=i;reater then,-"less then)
Cost IHC %ICO IRPM* IHC 2ICO
Left Right **"+•• = number of V turn
in the- "rich" civi>c:v
"-" = nunbcr of U riiv/.
' in the ','icaa" .'' IV-CLJ
-------
3"a & Before
r'.-.icle • Repair Facility Type of
•u-bsr Make & Model IHCjqCO IRFM* Facility
Effectiveness of Idle Adjustments .
at Commercial Repair Facilities Differences in
ST. L0l)\ S After is Turns of
Service Person's Repair Facility -Lab Set Mixture Screws**
Comments Cost IKC %ICO IRPM* IHC 2ICO IRPM Left Right
Additional
Comments
yew
17.50
380
700
/L/C'
2S .
-3
957*
108 3.
67° S^
,05" &0
O
Boicfc
O ^ 770
Skell
45* -03
o -/
/3c? o,
-7
CXev
el- i~fi/r
a S Crew o( r\ vrr
t>so 3.3* 600
Mefcuy
.0?
220
IbO <5" 600
-3
M&3\ 7/0
fc|5)
a A 550
.05" 725"
-a --
IHC ZICO IRPM*
AVEKAGES
*Number shoxm in parenthesis is
the difference in RPM from the
manufacturers specifacations.
(+=greater thcn.-^less then)
Cost IHC %ICO IRPM* IHC 'ZICO '
Left'Risht ,,*„+„ = nuTnber 0^ "tur
in the1 "rich" ,cir,-cf
in the Vlea^" -Jir-c;
-------
Date &
Vehicle
SB//j
Before
P.cpr.ir Facility Type of
lUr-S* FruvU Ily
Effectiveness of .Idle Adjustments
at Comnercial Repair Facilities Differences' in •
-ST. LOl)lS> After ;..'•• k Turns of
Service Person's Repair Facility . Lab Set Mixture Screws*'11
Cotecnts Cost IHC %ICO. tRI'M* 1IIC %ICO IRFM I.eU KJc.i'.!
Additional
Currents
200 .15" 700 -Z o
o
4.00
430. £2 780
Cf*»)
170
//J
fro
SUI
30
20 .oS-SSO
/="#£//, T
V
2.2.
70
62p
-2 -3
loo. .IS
3 .
Tt>
360 7P
-5. -«
•o
1
Ckew,
I •
6,50
420
440 .25
o -6
\1
IrfiUL
TO
S80 2.
600
o
M)'
AVERAGES
'•Number shewn in parenthesis is
• the difference in RTM from the
rianufacturers specif acations.
(-i-=3rcater then, -"loss tber.) .
Cost IHC ZICO
IHC %ICO
LefJ.R.i2ht:V;V1+M.= nurbcr ^f !j turhj
in the-"rich" divccti
"-"• = r.ur.ibcr of k turd
in thr "leav:" direct^
-------
(3)
Dfttc ft
Vehicle
7747!
Effectiveness' of .Idle Adjustments
at Cosinarcial Repair Facilities
Before
Repair Fnc.tl.tty Type of
•.',.• i. :!ir, .V'lCO I''•••••>" Fnril I! -.
Service Person's
Con::-.i;nts
Cost
After
Repair Facility
11IC ZICO. iRi'M'*
Differences' in •
k Turns of
Lab Set Mixture Screws**
ii!C %ICO IRFM Left iUv.i-.!-.
Adtlition.ll
[30* 4.74- 640
77.90
22.0.
bent
£50
I
I cHev
MOAT
AT?
230
> • /
-/
•fao
VSZ) .
(9
i )|4 .36 330|
100.
-2-
BW7
/SO 5.7
-5- -/
&
/Mercury
/73 "4« 820
2e *^
730 ,2. '
•f/0
C?
539
1^4- 40 1 ^20
'""Tiic "S
-75
AVEKAfiES
*Nurabcr shown in parenthesis is
• the difference in RFM from the
nanufacturers specif acntions.
(-i-=3reater tho:i,-=less then)
Cost . tac fflCO 1j^-i^ IHC %ICO~ Loft ;Rif.!it_fta'i'.+.i.= nt,..b'cr
!£ turn
in the-"rich" divccti
'.'-" = r.u:.ibct of '-£ turn
in the "Icii?." dirccti
-------
Effectiveness' of Idle. Adjustments
at Coiacercial Repair Facilities
chicle
u::::!x;r
Before
Repair Facility Type of
fr Model IliC. •;•;'[(:() mr:;* V.-u'.:U if.1
Service Person's
• Co'nnitonts
Differences' in •
After ' k Turns of
Repair Facility ' Lab Set Mixture Screws **.
Cost IIIC ZICO. IRI'M* II'.C %ICO IRPM Lett Rif.h'..
Additional
Consents
6X>\
o
&.O
-10
loo.
-(a -(0
#4
4-J .(I 650
6>b .y- 166
,2-
-( f/
3)
'SHELL
go
10,00
7.5-
.g
-6 -
-s- -V
,
&?*/
47 A
- r
.
'Tt
591*
670
. .-K7&-
(tb
IT.
boo
-7
-t-So
08?
44-
SUMO&O
S/ET".
isso
90 .or -
tiA/2-
-1%
7753,
0,0
me ?:ico
AVERAGES
*Nunbcr shown in parenthesis is
• the difference in RTM from the
nanufacturers specif acations.
(H-=3rcater thcn,-=less then) .
Cos.t 2 2ICO
IMC %ICO ~ Left RiRhtftft...!.'.., n..rbf-r "f k fr^
,'- '.'••:'.' ... in the-"rich" direct!
•'*''.. ' "-" = nur.ibor of •>£ turn!
in the. "lear." dircctil
-------
Effectiveness of Idle Adjustments
at Corar.arcial Repair Facilities
Datc
S"/"
After
Differences' in
k Turns of
Vchic]
..^•i^S.
O*7/ iJf
O * * /
•
''WO
'
'
•
e Repair Facility Type of . Service Person's Repair Facility •• Lab Set Mixture Screws'''* Additional
: Make £j.Mot!cl IHC %ICO IKl'H* Facility . Co-r.-i.-nts Cos'; IHC %ICO IRPM* IHC 7, ICO IRPv! Left Rijht ' Cor-ents
Toy of ft
C1 rt £? f\ fiiA
\^ V Km (J ' fVrJ
.
1
j
•
•
• • BRACES.; •
.
-MO
•
•*,
3l>o 752. %bt>
tto
;n* .« us
.
.
_ —_J
SaUK°
SVE.U.
W
.
.
IHC ZICO IRPM-
"££?* *"* .
MIO ^et^WM
U^fcf) %£ Zfzl'O pv^i//l^ 7"O
^"f /h/HTultiL $c/£fe/i4/~i~'
"Number shov.ri in parenthesis io
• Lbc difCercnce in R?M from t'ne
*~iar.u?xr trirors specif acstions . •
0,O
? 20
|/^J% •
.
.
/8V /.L, //fa
1l£ W 7SO
L}(0Q 2,0 fob 6
ft*;
'
.
220 . g 5*50
D
D
35tf Zf t"&
0
•
• '-
'
•
•
'
O JLuuv
1
0 0
-fV. -z.
...
•
.
' :
cost IHC race ;':.r:-i* me %ico Left Rir.h
s^f;
l/K\VEA8i/i TV
^v» iist*u>i /i 7^
• 10
I-"
1
• •
i" -
' ' • • . . . • •
••.* •.!"+'' = number of !i turn
ir. the "rich" divocti
"_" = ..-:-il-^r- n- '•• !-"V--
(-r-=Src.-.tcr then,-.=.less then)
-------
. D?-cc.«" . Before
Vehicle Repair Facility Type of
.Xi;;* •:•;;. •. '•••.'.';-c.;..Mqji!'.J..._..Tiif. /;u:o •]''.'•:>- 1-vuv.u ; i •••
F.ifectivcne.vS of .Idle Adjustr.cr.ts
at Cosprcial Repair Facilities Differences' in •
. (Vl/qSHlA^T'PA/) £>-c After k Turns of '
Service Person's ; Repair Facility . Lab Set Mixture Screws**.
ConwiMt.'j Cost I1IC Z ICO. tRI'M* II!C %ICO -IRPH 1 .'.:'.; t KJ r,h ':
!
I Sunoco
£30 3,4-
0
o -.* Xo
Adclitonnl
Consents
7736
0^-
7 o
-a
4 '
9.95
O
i i
8707
i«
f/oe)
7O .09 ^50
0
M)
872.4
.5-0
(,,90)
70 .-3^/020
-s -s
|43
30 ./O 6%
(-*>)
X5" .
7751
./Ve
-«K«.
/.o.
-Si -
,03
,.L
b. 'C**r tO
too .os 440
/OP
.04- 630
0
iiy ..•
«
isra*
,W,"KAO!iS
Dumber shown in parenthesis is
, the difference in RFM frora the
nanufjiiturers specif acacions.
(+=3reater then,-=less ther.) .
cost IHC %ico imi- me zico
Left
*.,+... = nunbcr of .£ turil|
in ci-.c- "rich" dirocti
"-" = i-.ur.il-cr of h turn
-------
Vehicle
97/foj
Before
Repair F-cility Type of
F.^fectivcnc.-.s' of Idle Adjustments
. at Coimr-ercial Repair Facilities Differences' in
UV^S^^ytyv/) RC.After . . Jc Turns of
Service Person's Repair Facility . Lab Set .Mixture Screws
Co~?!c:it.-J Cost ' IHC % ICO. IRi'M'* l.!!C %ICO IUFM 1...-U Ki r.i-.v.
Acklitionhl
/S
to
-/Od
.16
D -I
S7/3J
ISl
560
-tt.0
f
un
. t>
iT
sto
o
-5" -
|/7 O 840
3HU.L
7 so
.r
-Z. 0
flS*
sej
if A Toi? 1
3.VO
/to
-/' c?
A/0
r-T-O
-10
U5£P
Jo
ISO. .7
100 .5" (top
-•2- -2-
Mo .
Z3 o
60
boo
--5D
-S - 3 Afl
-3D
Mercury
frrnvu*
4 60 .
'-/
-Lo
.0
tfD .0 5T30
IHC %ICO IXKM*
AVr.HACI-3
*Number shown in parenthesis is
• the difference in RTM fro;a the
manufacturers specif acations.
C-!-=3reater then,-=lcss then)
Cost IHC ZICO 1RPM* IHC %ICO
Left
;•:*".;."• = nunber of !j Cum
• in chc- "rich" ditecti'
"-" = number of '-•: turr.
in the "!O;VA" direct::
-------
Date &
Vehicle
Before
Repair Facility Type of
]'•: <'••>* I'at-.i] i !.y
Effectiveness of ,Icle Adjustments
Cogr.ercial Repair Facilities
'1C-
Service Person's
Differences' in •
After Jj Turns of
Repair Facility . Lab Sot Mixture Screws**
Cost I1IC X1CO. tRl'.'l'* 1IIC ZICO IRFM 1.,'jtu iUr.h!.
Additional
[3 O.
Cehcq
A So
,0$
,-J-z-v
-/
4,38
fD
uf jiMjt»e f o
0.0
-2. -r
O
\ Fufy
350
75D
(SO As"
-i. -3
if
0.0
»5" 950
-^ - 2-
IS*
3 00
O
-4-1
IHC y,ico
AVKIUGES
0.0
600
LAS"
*Numbcr shown in parenthesis is
• the difference in ItfM frora the
nanufacturers specifacations.
(•^greater then,-"less then) ,
Cost IHC %ICO IRKi- IHC ZICO
Lofl:
ftft"+"- « number o'i turn
in the- "rich" dirpcti'
"-" <= r.ur.ibcr of •'£ turn
in the 1!leav." Jirccti
-------
'Date_&
Vehicle
jjcfore
Repair Fr.cility Type of
li!C '/,'T.CO. IK1''!* Vav.iJ 1 Lv
Effectiveness' of Idle Adjustments
at Commercial Repair Facilities Differences' in •
(u>A£Hl*t&P*' V-C") After , Sj Turns of •'
Service Person's . Repair Facility . Lab Set Mixture Screws**
Conanents Cost IMC %ICO. IRI'M* 1.IICZICO -IRPM LcCt iUr.h!.
Addition1
S/»it> ^ filt/eK,
3.oo
700
•40
?ot>
f-200
-y -3
775B
919 4.10
T/WD.
mi*
?OD S-lo
i+o .os
0 -/
LAB.
O
7,50
no 2.0
-3 -
He.
Co
0
O
-66
Set
A
, Ht Salt?
.OS" 57t>
1*6
. -$• •
'.*&
Jo
Cel*
AVERAGES
B O
130
770
3*
IHC TiCO IRPM*
^Nuaibcr shown in parenthesis is
• the difference in RTM from the
rianufacturers specif acations.
(-i-=3reater thcn,-=less thcr.) .
Cost '1HC ZICO 1RPM- IHC %1CO
Left.'aighlftftn+H... nuP.bcr of ?t turnj
in the-"rich" direct!
"T" = iiunil-cr o£ '-j turr.
. in the. "le.r.'." dirccti
-------
Date &
Vehicle
Effectiveness' of I<;le Adjustments
at Commercial Repair Facilities
Before
Kepair Facility Type of
Service Person's
Ccfc-.'iuuts
Differences' in
After ' =j Turns of
Repair Facility • Lab Set Mixture Screws'
Cost me %ico. tur:;* inc %ico -IRFM !,•-::t R.ir.i-.:_
O ..6&\
{ useD
\tfe-
5»>f)
TDo/S
„
60 O
-t-1. -f-2-
777*1
23 ,68
tiU
MlT
t~o
-HO
/a
/oo I,
6>o ,7
-t
-RO
9.60
+VO
y^ ,/r ^^a _
+50
?3 0 S60
Y.
580
-76
-i. -Z.
j O O 830
0.0
-75V
-6 -
-//t>o i
3.3/^0!
- -fio
Could
130 .3 tffd
/#>
-7 /K4i f«/«'eJ*
VSBD SUN
100.
LAB, S£7~
.774^
#[>..
..'Zs>ol
3e>
IHC %ICO IRFM-
'•Number shown in parenthesis is
the difference in RFM froir, the
nanufacturers specifac.iticns.
;ater then,-=lcss '-her.)
Cost • :IHC XICO 1RPM* IHC 21CO
ir. ch.c• "rich"
••<.. turn
direct!
-------
. Date.&
Vehicle
Before
Repair Fncilitjr Type of
1iIC 7,ICO IRi'M* Vnc.il i iv
Effectiveness' of .Idle Adjustments
at Commercial Repair Facilities Differences' in •
^# S#;v£To/V P.C After k Turns of
Service Person' s Repair Facility • Lab Set Mixture Screws **•
Co'siiiicnts Cost IUC_ZICO. tRI'M'* II!C ZICO IRPH l.olt iUgh!:
Additional
690
. _
HO
O
-(*
7755'|
I 0\J*
$60
Sr> hO
O O
JO.M
0 0
o
Lftly. St-f
3.47
-HO
3/0 5.2
ISO '
(ofX>
-2.
-/
%2?\
3 0
»V
o.
A/)"/>v
-IS
30
-7
>9t>
we
$.j
5**0 /T
i turn
in the "le.v?." directi
-------
Date u
j;ij£bcr !j.'iji?l f.-'
Before
Repnir ~r.:..tlity Type of
Tlif. :',:;CO IKI'M* Facility
.Effectiveness of Idle Adjustments
at Ccr,--.ercial Reca'ir Facilities Differerces in
\fiJf&H>N(iTo& P-C ,. Jii^ercnces in
•^ Alter *s Turns of '
Service Person's Repnir Facility . Lab Set Mixture Screws""
Consents flost IliC %ICO IRI":" IHC XICO IRT-M ;.c^t Rir.i'.t:
1279
I 7 ' ^o
-to
*J To loo
e>.o
I*9 \
.S'
•-/DO
-y
A/t>
Ac-ditlor..il
Corr.cr.ts
'n/
|W£t/
5 3D
375" 2-6 606
-3 -V
/A/
/.JL3. 570
£DL£
S.OD
?7r /-fi sso
-V -3
/*)
NJ
00
! £-TP
3.1$ 570
lo.oo
Ho
t>o ,
-.3 -
+ 30
5/»/0
-*>
ID -79
0,0 (50
./ goa
-<>
41 kO
172$
570
I-S"
IHC ZICO IKPM"
i
+5-0
''••Number sho-.vTi in parenthesis is
the difference in RTH from U!ie
manufacturers specif acnt.'.or;S .
•. (-r=3rcat2r thaa,-=.lcss ther.)
Cost IHC %ICO iXPM* IHC
Lett Kif,-ht .-..vt
'Tv
nur.uC.r or •; turn
2'"rich" dirocti
lumber of *i turn
-------
Effectiveness' of Idle Adjustir.ents
at Cosanarcial Repair Facilities
Dat- * .- • Before
Differences in
])C, After k Turns of
Vehicle Repair Facility Type of • Service Person's ' Repair Facility • L"b Set Mixture Screws5** Additional
. Rusher . Mahc & Model IHCXICO IRPM" Facility Comr.cn ts Cost IHC % ICO IRPM* IHC%IC? IRFH Left S'l-ht: Consents
7727 Btow«i
» > *• f ]
i
7733
'"»
ITtf
777J
1
m */. »»
3 .2. sse
'i
NoVPt • \
: f?0
c/»/eo)
f
C&L.\
.
3^7 -'5 ^°*
f/otf
0
1
1
'[
f
_ _ !
A.V7,KACIiS
&.,,
*,*z.
£«
4~~v
WF
IHC' 5SICO IRFM-
C4X8, •
/•v /7 • i y . **" ^ *"'
^ O (j • £' ' * I ' 9 /t-'/ '^T^ ^
^iD^e^A//*- S (T^^
\
''•'Number shown in parenthesis is
the difference in RPM fron the
5,00
0,0
'
/<>.&>
0,0
***** b°D
y/w
boo "7. 0 7^0
;
-f/oo
-3o
/fO '9 6»
70 ,3 ^
7VOO
^tf*> ?«5" 70^
0
^ ^ ^
*
0 _/
.-/ -/
-/ -/
ijm
~~ "^" i**
•
' *i
-^"^.
/t/0 f///*^
/V p^/ / / y/
S -M»^
/ ^D
' 1
$&&v
• •
Cost IHC /aco IKP:-:* I'.ic /;ico tc-:~. Rir,;-.t.---."4." _ r..^-.,or ^ -,, -,r~,
.in the' "rich" dirc-cti
nanuf acturers specif acaticns .
(•!-=£rcater
"-'' = nur.bcr or ''•. tur:\
-------
Date & Before
Vehicle Repair Facility Type of
Nunber Make & Model IHC %ICO IRPM* Facility
Effectiveness of Idle Adjustments
at CoMnercial Repair Facilities Differences in
Phoenix . ^(.gj. !s Turns of
Service Person's Repair Facility • Lab Set Mixture Screws**
Comments Cost IHC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
776?
<=t\
63 .71 730
/oo A3 8?o
77?l
CIO
TO G.
Coors*.
CO
9.50
I2o
(fISO.
/VO Di
7773
5V
a course \v\
looked at ewMtsio
sp«c book, oW screiJdf'vrr
7.^0
/34
£-3
-7 o
A/o
6776
ST U,
2.5% 01 £>
/.H7
no
(bo
(190)
•SO
-/ o
. If
Arco
is
out
120 •/ 630
O
•ff
r
cw
S? -0*7 5'5o
you
/.
Clfc
£.00
&'«•)
-f/ o
A/o
o, .07- 600
car u?as
lean.
3/0 £.
-------
D:ite & Before
Vehicle Repair Facility Type of
Number Make & Model IHC %ICO IRPM* Facility
. Effectiveness' of Idle Adjustments
at Commercial Repair Facilities
Phoenix
Service Person's
Comments
Differences in
After h Turns of
Repair Facility ' Lab Set Mixture Screws**
Cost IHC % ICO IRPM* IHC % ICO IRPM Left Right
Additional
Comments
8674
4/4/79
350
-ID
.03
C«f
af-ta.iej SO
Hc.~t-co
8.00
70 .
ft'o
+1 +3.
8690
4/2/79
.35-
screu; Jcnvef
rv\c.clvoi>\\c s^xol car -
18.95-
.o2
air£iHeron.
6O .03 600
0
/VO Difference
in cfn wf«fc>.//^/
8693
4//8/79
Wo
ftio)
-/ezoco
was c^skeof i5 Ke
Koio( 4o be ceHi-fierf— ke said ha.
Carbofo-lof ojos. nek userf <*
300 ^.4 680
-3 0
-a-
aTCur«
•2.0°
3.13
+00
2.00
l&o .33
(7o .19
-/ o
si 1
869?
4/7/7?
/JLZ .02. 100
CID
-*-CO
HC
screwc/nveT
I2.oo5a> -28 750
600 /.o
IS
D
lab set
.09
Oman
76
o
400
(-/oo)
02^*°
cac
beHer aos
^.et
^5
burn.
screu/tf/nvef.
80
o o
r+»Q?
care
CAf
reac/ sl
S.3S
.02 980
850
0
-1 0
A/o D/ 5f.
"n
IHC %ICO IRPM*
AVERAGES
*Number shown in parenthesis is
• the difference in RPM from the
manufacturers specif acations.
(+=greater then,-=less then)
Cost IHC ZlCb IRPM* IHC ZICO
Left. RiSht **"+" = number of k turns i
in the- "rich" direction.
"-" = number of \ turns
in the "lean" direction
-------
Vehicle
Number Make & Model
Before
Repair Facility Type of
IHC %ICO IRPM* Facility
Effectiveness of Idle -Adjustments
at Commercial Repair Facilities
Phoenix '
Service Person's
Comments
Differences in
After k Turns of
Repair Facility ' Lab Set Mixture Screws **
Cost IHC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
.13
oaf IS cleave ahrf unll
^e4 aood "j-ftS VVM|PC<^C
Used HC -^ 00 c,iWy£ef.
00 .4
On
.n
S-falion
mecVianic Sdirf «ill cpfbs
«d^os-f •vUc s<^vne . Carb only
oft bv/ ^j. 4or^' 6)5^
65
O
9/0
(/-/IO)
So -4 £8o
•ffr*
-2. 0
kb set.
O
/50 .3 870
°
I h Dnv
clop
5:00
7O
d
IHC %ICO IRPM*
AVERAGES
*Number shown in parenthesis is
• the difference in RPM from the
manufacturers specif acations.
(+=greater then,-=less then)
Cost IHC %ICO IRPM* IHC %ICO
Le.f.t. Rightaa..+.. = number of jj "turns .
in the "rich" dirpction-
"-" = number of % turns
in the ".lean" direction.
-------
Date & Before
Vehicle Repair Facility Type of
Number Make & Model IHC %ICO IRPM* Facility
Effectiveness of Idle Adjustments
at Commercial Repair Facilities Differences in
Phoenix' Afte,. Jj; Turns of
Service Person's Repair Facility • Lab Set Mixture Screws**
Comments Cost IHC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
7740
3/26/79
£l-etlN G^Cr.c:J__
35"O C lli
. Oi_
Used HC ={-Oo
/SO /.
70
500
A/o
774-4-
2? a
{+•100)
K\oi
/7O
87o
(ngo)
JO O .06
1-1 -/
Oi
774?
3/36/79
fort
cer-f i
/Yd *t- 0 <3 anily ?-pr, s o reu/dr/vt
JO
-3 -
774?
301. c\c
>°l 643
o -
specs.
7760
3/26/7?
rvvecUawc
35 t02
C?
70 -03 7/fl
-//o
^p-f
\ollej.
Te^qco
HC ^ CO analy-gef
screwdriver
/4o -28/0
(tlio)
+3
//o
IHC %ICO IRPM*
AVERAGES
*Number shown in parenthesis is
the difference in RPM from the
manufacturers specif acations .
(+=greater then,-=less then)
Cost IHC %ICO IRPM* IHC ZICO
Left Right **»+„ „ number of jj turns j
in the "rich" direction-!
"-" = number of % turns •
in the "lean" direction.;
-------
Date & Before
Vehicle Repair Facility Type of
Number Make & Model IHC %ICO IRPM* Facility
Effectiveness of Idle Adjustments
at Commercial Repair Facilities Differences' in
Phoenix '.. Af ter j,. Turng Qf
Service Person's Repair Facility • Lab Set Mixture Screws**
Comments Cost IHC %ICO IRPM* IHC %ICO IRPM Left Right
Additional
Comments
£784
3/4/771
CkffJ.
-fo
jer
4,60
.03 boo
0
Ub set
6736
ckevr
on
IS
used analyzer a
d.oo
1000 . 3
kb
J//6/79
700
scf)
3oo l
-4 -3
lab s«H.
756
classes. 0»sec/ 5 creU driver
0 a^lytef
-/
.y/o
1/3/79
35"! .30
piss
s«u<*- i-f
-fesl
4-ipo
SOO .3
/600 .3
o -a
Worse
a-f-fef Ufc" vSc<
6799
1200
or?
/OO
-3 o
scc/pc,
0
Pass s-kte
teJ1,
Ke
35-0 '2.
-/
\ reprove ^e^i i''*\
ccl €r«n^0b
|qb sei
IHC %ICO IRPM"
AVERAGES
*Number shown in parenthesis is
• the difference in RPM from the
manufacturers specifacations.
(+=greater then,-=less then)
Cost IHC ZICO IRPM* IHC %ICO
*"+" = number of % turns j
in the' "rich" direction.:
"-" = number of >s turns
in the "lean" direction.
-------
Date & Before
Vehicle Repair Facility Type of
Number Make & Model IHC %ICO IRPM* Facility
Effectiveness of Idle Adjustments
at Commercial Repair Facilities
Phoenix : ^ter
Service Person's Repair Facility
Comments • Cost IHC %ICO IRPM*
Differences in
% Turns of
Lab Set Mixture Screws**
IHC %ICO IRPM Left Right
Additional
Comments
I"v0
76
6008.
1 3 ° -Off
•no
-12 -12
cfn
i
fab -5"e/
'+/00)
w«tS
scfeuwveT
O
800 -12
28C7 .
+3
3808
Gl»evy St UW
Ipo CiD
,02.
i'c set c.<^f -\o
leader. Osea screuarivfT
1. 3
-X5"
-t Sc&p-c
$-9/0
2?
7feo
4.00
.02 7,50
-3 -
/n
set?
2. .& 550
4-60 no
cars
G>yrs.
D
5817
.07.
350 C\0
Kac(
.yjsAi«
//o .oz.
-4 -4
c/n
.-74
4/9/7?
IS
Caf
-f0&
-4 -\
5024-
4/5/77
CoTO
/./»
Own %
/s
sc reu}d fiver <4-
110 .
760
-; o
/Uo
IHC %ICO IRPM*
AVERAGES
*Number shown in parenthesis is
the difference in RPM from the
manufacturers specif acations .
(+=greater then,-=less then)
Cost IHC %ICO IRPM* IHC %ICO
Left Right **...,.., = nuraber of 'ij "t'urns ':
in the "rich" direction..
"-"• = number of ^ turns
in the "lean" direction
-------
/ 3cf,re
chicJc Repair .Facility Type of
i^c;::..^ M^;>-.c:.:;;cucl IHCiUCO IR?M:': nir.ility
Effectiveness of Idle Adjustments . '
at Comraarcial Repair Facilities • BiffereT-cs' i"
A/-77 LofOt&taZ After Is Turns of -\fc
Service Person's •- • Repair Facility- • Lab Set • Mixture Screws"*
Co-T.cnts • Cost TKC2ICO IRI'X" IHC2ICO IRPM . Left K.:^".'.:.
.
Arfclition.il
Corrects
,
J. DO
I
t}0
(-**)
K~/
j/5- .01 775-
z.- y'-'-fS
(3.0V
&/*?£• r /^p ^rD |700
To
uc 2>t(on) co
1-4 C.
-03
0 —
575"
500 a.
/ -n/
(o)
05" .
foylD HfL^ fav run
X5/90
-63 57?
/S
550 -3 -3
\
Ul
ON
1
72/3
(.0
•(-//*>
-Ol SSt>
1°)
t-S .01 55"0
-v -/
fo®
55^
Co
Staff. ,
/oo ,30
3-D . OS" 9lX>
(0)
, Too K.i
i/D
' 7S&
('ISO}
,of
A/t
170
-3o
IHC . XICO IKPM-
""umber shov.-n in parenthesis is
t'ne difference in RPM from the
nariufactu::!?rs spcciracations.
(+=j-,reatcr thcn,-=lcK.s then)
Cost IHC ZIGO IRPM* IHC %ICO
!'+» = nu"faer of :•; turn
in the-"rich" dirocti
-------
Before
Vehicle . Repair Facility Type of
Xu^bcrjw-.X^tc..c^joclnl IHC fTCO IRPM" Facility
Effectiveness' of Idle Adjustments
at Coras=rcial Repair Facilities Differences in
/y-7? ^-<5>* '&V&SVZS After % Turns of
Service Person's Repair Facility Lab Set Mixture Screws**
Coimicnts Cost friC %ICO TR!';i" IHC 7ICO IRFM ;.•?.-:t r>.:-':-. .
5213
30V 3 '-/O . 6 00
so .6J 53» yr
-2. O
Cental K f*>~
(-2ooj
(o)
5ZZ5T
50 ,65" 72.0
(-30)
fl^b
sco fg ,
7*1 V f-DUi Co off f?0
cf*i o-f4
fS.oo
20 -OS" 75T>
6227 I
I C«A>7^
Co
.of
SO .02, 52t>"
' /-7S)
(o)
Ale? C.T»
5227
yo
No
A-pT.
fi)
19.00
30 >ol 600
(o)
30
-/
io)
13.00
HO)
too
/oj
-1 -1
1
u
&(>*<-
-or
/V0 7 ft/low ff>
yt> 'ID
'03
600
("I.
-v — s
522.5*
5/1/79
//OO
5/0
S*iO AioTott: i'M BfiQ
vrtos Aiwjo* 7»»«up rtwt t»oer o*/
.70
IHC %ico in?:-:-
(.no)
I
••Nunber shown in parenthesis is
the difference in 5FM from the
manufacturers specifications .
(-!-=Srcater thc:-i,-=ic:;.~ then)
Cost IHC %ICO IRPM* IHC %±CO
^
-------
Date
' Vehicle
Before'
Repair Facility type of
_f. Model IHC ?CICO IKl'M" Facility
Effectiveness of Idle Adjustments
at Qoimnercial Repair Facilities Differences' in
fy-77 £0f JfaX*£i£$ After k Turns of
Service Person's • Repair Facility • Lab Set Mixture Screws1
Comments Cost .IHC 7, ICO IRFM* IHC %ICO IRFK Left Rig!;::
Additional
Consents
1'
.ol 60O
-90
ctliCft \
(->*)
ID .SO'
/D
Rwtdfttto
0 -0 / 550
too
10 ,02.
fo)
/55 .O/
5". 75" 5t>0
10 . .52.
.
1°
52.V0
sfufa
III S
V.-50
75" J.
50
ft we o-C C/iee.
,ol to
(-*>)
.ICO
AVJiKACES
;hown in parenthesis. is
the difference in RPM from t'.ic
manufacturers specifications.
(•+=3roater thcn,-7,!oK:-; tlien)
Co»t IHC /ilCO livPi-1- IlIC /,ii,0
= nur.ber or ••: turn
in the1"rich" dirrcti
."-" = nun-bcr of h tun-
-------
Dr.to. f.- /
Vehicle
Before
?,o.pair Facility Type of
IRVM* Facilitv
Effectiveness' of Idle Adjustments
•at Coianercinl Repair Facilities • Differences' in
/Y-77 LoSfa&g&S After A Turns of
Service Person's . Repair Facility • tab Set Mixture Screws**
Cements . . Cost IHC % ICO iKFM* IHC % ICO IRPM LciTu K|r.::;.
T
Additiomi
Com.-o.Rti5
.?7D 3,75"
*^ ft 7 is?
5, a S?S
(-**).
-8 —
3)
at?
(0}
to .fit 7DQ
o)
-y --/
u>
T
no
.ol sis
DfALE'Z
js" s/r
StiS"
&& pii)To.
350 ,0t> JOB*
•fr/so]
CA/C
b-e
JO
o —
(-/to)
^
.01
l.ov
1$ .fit
/O .'»/ .550
555 /O.OD 590
IHC %ICO IRFM-
Mf- ro
,25"
-•3-'—
AVE'.IASES
^Number s!io^-n in parenthesis is
• the difference in RFM from the
ranufacturers specif acat-ons.
(-r=;;,i-catcr thcii,-=less ciicn)
Cost .IHC ZICO IRPM* IHC %ICO
Lcfc JLir.JiL :•.-*"+" = number of k turn:
in t':ic' "rich" dirncti'
"-" = nur.iber cf k turn
i:v the "Ic^n" direct!
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