1991 MITSUBISHI 3000GT Service Manual

FUEL SYSTEM- Fuel Line and Vapor Line13451FUEL
LINE AND VAPOR LINEMlBKA-~
iREMOVAL AND INSTALLATION
i30 Nm
6

Removal steps
1, Reserve tank2. Battery
3. Battery tray with washer tank assembly
4. Purge control valve
M 5. Fuelvapor hose6. Canister
7. Vapor pipe assembly
l +8. Fuel return hosea*9. Eye bolt10. Gasket11. High pressure fuel pipel a 12. Fuel filter*I,13. Eye bolt
14. Gasket
l * 15. High pressure fuel hose
16. O-ring
w 17. Fuel vapor hose
18. Stone protector
19. Fuel vapor pipe20. Fuel return pipe
21. Fuel main pipe
Deli\rerye
i603N0012
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13-152FUEL SYSTEM- Fuel Line and Vapor Line
03FOO3
05FOO735 Nm7r; ft
Ihr-k” ._..I_.
@dFlare nut,xSERVICE POINTS OF REMOVAL
MlBKBAQ9. 13. REMOVAL OF EYE BOLT
Remove the eye bolt while holding the fuel filter nut
\securely.
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual pressurein the fuel pipe line.
INSPECTION
MIBKCAJ
lCheck the hoses and pipes for cracks, bend, deformation
and clogging.
l Check the canister for clogging.
l Check the fuel filter for clogging and damage.
SERVICE POINTS OF INSTALLATION
MlSKDAU17.5. INSTALLATION OF FUEL VAPOR HOSE
/ 8. FUEL
RETURN HOSE
(1) If the fuel pipe has a stepped part, connect the fuel
hose to the pipe securely, up to the stepped part, as
shown in the illustration.
Iti(2) If the fuel pipe does not have a stepped part, connect
the fuel hose to the pipe securely, so that it is the
standard value.
Standard value: 25
- 30 mm (1.0 - 1.2 in.)
15. INSTALLATION OF HIGH PRESSURE FUEL HOSEApply engine oil to the hose union.
Insert the hose, being careful not to damage the O-ring, and
tighten securely.
CautionBecause there is high pressure applied between the
fuel pump and the injection mixer, be especially sure
that there is no fuel leakage in this area.
12. INSTALLATION OF FUEL FILTER(1) When installing the fuel filter, first temporarily install the
filter to the filter bracket; then insert the main pipe at
the connector part of the high pressure fuel pipe, and
manually screw in the main pipe’s flare nut.
(2) Holding the fuel filter nut, tighten the fuel main pipe’s
flare nut and eye bolt at the specified torque. Then
tighten the filter to the bracket.
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FUEL SYSTEM - Fuel Filter13453
FUEL FILTERM13VA-.
/REMOVAL AND INSTALLATION
i&J
L
/Il Removal of Residual Pressure from
Post-installation Operation
l Checking for Fuel Leakage
Removal steps
1. Battery
2. Battery tray with washer tank assembly
3. Eye bolt4. Gasket
5. High pressure fuel hose
6. Connection of fuel main
pipe7. Mounting boltl *8. Fuel filterl *9. Eye bolt10. Gasket11. High pressure fuel pipe
l---
222 ft.lbs.03FOO12
Gasket
fuel pipe
&----Eye bo’t 03FOO13SERVICE POINTS OF REMOVAL
MlSVBAB3. 9. REMOVAL OF EYE BOLT
Remove the eye bolt while holding the fuel filter nut
securely.
Caution
Cover the hose connection with
rags to prevent splash
of fuel that could be caused by some residual pressurein the fuel pipe line.
SERVICE POINT OF INSTALLATION
M13VBAB8. INSTALLATION OF FUEL FILTER
(1) When installing the fuel filter, first temporarily install the
filter to the filter bracket; then insert the main pipe at
the connector part of the high pressure fuel pipe, and
manually screw in the main pipe’s flare nut.
(2) Holding the fuel filter nut, tighten the fuel main pipe’s
flare nut and eye bolt at the specified torque. Then
tighten the filter to the bracket.
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13-154FUEL SYSTEM - Detonation Sensor
DETONATION SENSORREMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
l Release and Installation of the Air Intake Plenum
(Refer to GROUP
15-Air Intake Plenum.)
l Removal and Installation of the Intake Manifold
(Refer to GROUP 15
- Intake Manifold.)
l * +*I. Detonation sensor
20-25NmSERVICE POINT OF REMOVAL
1. REMOVAL OF DETONATION SENSOR
SERVICE POINT OF INSTALLATION
1. INSTALLATION OF DETONATION SENSOR
When the detonation sensor is installed, be sure to tighten
Idit precisely to the specified torque as its installation affects
the engine control.
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ENGINE CONTROL - Specifications / Troubleshooting13-155
ENGINE CONTROL
i; SPECIFICATIONSSERVICE SPECIFICATIONS
M13CEB
IItems
Standard value
Accelerator cable playmm (in.)


Accelerator switch switching pointmm (in.)
TROUBLESHOOTING
Specifications
1
- 2 (.04 - .08)
3-5(.12-.20)
2 - 6 (08 - .24)ACCELERATOR CABLE AND ACCELERATOR PEDAL
MlSEGAC
ISymptomProbable causeRemedyI
Throttle valve will notfully open or closeMisadjusted accelerator cable
Misadjusted automatic speed-control cable
Broken return spring
Throttle lever malfunction
Adjust
Adjust
Replace
Replace
Accelerator pedaloperation not smooth(over acceleration)
Accelerator pedal wrongly tightened
Misinstalled accelerator cable
Accelerator cable requires lubricationRepair
Repair
Lubricate or replace
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13-156ENGINE CONTROL - Service Adjustment Procedures
SERVICE ADJUSTMENT PROCEDURES
M13FBCKIACCELERATOR CABLE INSPECTION AND
a ’ADJUSTMENT
For models equipped with the cruise control system, refer to
P. 13-l 58.(1) Turn air conditioner and lights OFF.
Inspect and adjust at no load.
(2) Warm engine until stabilized at idle.
(3) Confirm idle speed is at prescribed rpm.
(4) Stop engine (ignition switch OFF).
(5) Confirm there are no sharp bends in accelerator cable.
(6) Check inner cable for correct slack.
(7) If there is too ‘much slack or no slack, adjust play by the
following procedures.@ Turn the ignition switch to the ON position (without
starting the engine) and leave in that condition for
approximately 15 seconds.@Loosen the adjusting bolts on the air intake plenum, and
then secure the outer cable so that the free play of
th,einner cable will be the standard value.
Standard value:
1 - 2 mm (.04 - .08 in.)3-5 mm
(.12-.20 in.)
NOTE
\JIf there is excessive play of the accelerator cable, the
vehicle speed drop (“undershoot”) when climbing a slope
will be large.
If there is no play (excessive tension) of the accelerator
cable, the idling speed will increase.
(8) After adjusting, confirm that throttle valve fully opens and
closes by operating pedal.
(9) Adjust accelerator cable play and confirm throttle lever
stopper touches the fixed SAS.
ACCELERATOR SWITCH INSPECTION AND
A
nADJUSTMENTMlBFlBC
09FO117Make sure that when the accelerator pedal is free, there is
;$ustingcontinuity between the terminals of the accelerator switch and
/that when the pedal is pressed until the indicated pedal stroke
A reaches the standard value, there is no continuity between
the terminals of the switch.
Standard value:Accelerator switch switching point
2 - 6 mm (.079 - .24 in.)If stroke A is out of specification, adjust with adjusting bolt.
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ENGINE CONTROL - Engine Control13-157
ENGINE CONTROLREMOVAL AND INSTALLATION
L’
/
ii5Nm
4
ftlbs.1
/
Removal steps
I. Adjusting bolt2. Connection of throttle body side inner cable
3. Bushing
4. Accelerator cable
5. Accelerator
oedal6. Spring ’7. Connection of accelerator switch connector8. Accelerator arm bracket9.Split pin10.Accelerator arm11.Return spring12. Accelerator switch 13. Accelerator arm stopper14.Bolt 15.StopperMl30A-
-Post-installation Operation
l Accelerator Cable Adjustment
(Refer to P. 13-156.)l Accelerator Switch Adjustment 07A0031INSPECTION
MlBOCAJl Check the inner and outer cable for damage.
l Check the cable for smooth movement.
l Check the accelerator arm for bending.
l Check the return spring for deterioration.
l Check the connection of bushing to end metal fitting.
l Check the accelerator pedal switch for correct ON-OFF
switching.

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13-158CRUISE CONTROL SYSTEM - Specifications
CRUISE CONTROL SYSTEM
SPECIFICATIONSLJGENERAL SPECIFICATIONS
MlOCA-.Rated load A
Voltage drop V
Auto-cruise control switchRated load A
SET
Stop light switch (for cruise control)Rated load A
Clutch switchRated load A
Vacuum pump
TypeRated load A
Control valve, release valveSERVICE SPECIFICATIONS
MlBCB- -
ItemsI Specifications
Accelerator cable playmm (in.)

Throttle cablemm (in.)
Cruise control cablemm (in.)
Resistance between terminals for control valve and reliefvalve in vacuum pumps1
O-l (O-.04)
2-3(.08-.12)
1-2 (.04-.08)
l-2(.04-.08)
50-60
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