Mitsubishi FUEL Manual page 266

13I-72
INSPECTION PROCEDURE 6
Initial combustion takes place, but does not complete
(start impossible), too long time to start (poor start)
This may be caused by improper spark plug ignition (poor spark), improper mixture
during engine cranking, improper fuel pressure.
Check system voltage while the engine is cranking.
OK: 8 V or more
MUT-II Self-Diag code
Is a diagnosis code displayed?
MUT-II Actuator test
07 Fuel pump (low pressure) (Refer to P.13I-104.)
MUT-II Data list
21 Engine coolant temperature sensor (Refer to P.13I-98.)
MUT-II Data list
18 Cranking signal (Refer to P.13I-98.)
MUT-II Data list
74 Fuel pressure sensor (Refer to P.13I-98.)
Check fuel leakage. (Refer to P.13I-125.)
Is the engine started normally when it is cranked with the accelerator
pedal depressed slightly?
MUT-II Data list
79 Throttle position sensor (1st channel) (Refer to P.13I-98.)
Check ignition timing when the engine is cranked.
OK: approx. 5_ BTDC
Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.
Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.
(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.
Check all the following items:
D Spark plug
D Compression pressure
D Foreign material (such as water or kerosine) entered the fuel
lines
Check trouble symptom.
NOTE:
*: Refer to the '99 GALANT Workshop Manual (Pub. No. PWDE9611-A)
GDI -
OK
No
OK
OK
OK
OK
OK
No
OK
OK
OK
OK
Troubleshooting
Probable cause
D Malfunction of the fuel supply system
D Malfunction of the fuel pressure sensor
D Malfunction of the ignition system
D Malfunction of the electronic-controlled throttle valve
system
D Malfunction of the engine-ECU <M/T>
D Malfunction of the engine-A/T-ECU <A/T>
NG
Check the battery. (Refer to GROUP 55 - Battery.)
Yes
Refer to P.13I-11, INSPECTION CHART FOR DIAGNOSIS
CODES.
NG
Check the fuel pump (low pressure) system.
(Refer to P.13I-94, INSPECTION PROCEDURE 30.)
NG
Check the engine coolant temperature system. (Refer to P.13I-18,
INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)
NG
Check the ignition switch-ST system.
(Refer to P.13I-92, INSPECTION PROCEDURE 28.)
NG
Check an abnormal fuel pressure system. (Refer to P.13I-33, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0190.)
NG
Repair
Yes
Clean around the throttle valve. (Refer to P.13I-98*.)
NG
Check the throttle valve position feedback system.
(Refer to P.13I-57, INSPECTION PROCEDURE FOR DIAGNOSIS
CODE P1221.)
NG
Check that the crank angle sensor and timing belt cover are properly
installed.
NG
Replace the ignition coil.
NG
Replace the injector.