MPI <4G63>
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Troubleshooting
13D-42
INSPECTION PROCEDURE 6
Initial combustion but no complete combustion
(starting impossible)
Probable cause
In such cases as the above, the cause is probably that the spark plugs are generating
sparks but the sparks are weak, or the initial mixture for starting is not appropriate.
D
Malfunction of the ignition system
D
Malfunction of the injector system
D
Foreign materials in fuel
D
Poor compression
D
Malfunction of the engine-A/T-ECU
OK
Clean the throttle valve area. (Refer to P.13D-90.)
OK
Check the following items.
D
Check the ignition coil, spark plugs, spark plug cables.
D
Check if the injectors are clogged.
D
Check the compression pressure.
D
Check fuel lines for clogging.
D
Check if foreign materials (water, alcohol, etc.) got into fuel.
NO
Check the ignition timing when cranking.
OK:
Approx. 5
_
BTDC
NG
Check that the crank angle sensor is installed properly.
OK
Is starting good if the engine is cranked with the accelerator pedal
slightly depressed?
YES
Check ISC
servo
for
operation sound.
(Refer to P.13D-102.)
NG
Check the ISC servo sys-
tem. (Refer to P.13D-64,
INSPECTION
PROCE-
DURE 32.)
OK
Can any sound be heard from the injectors when cranking?
NG
Check the injector system, (Refer to P.13D-29, INSPECTION PRO-
CEDURE FOR DIAGNOSIS CODE 41.)
OK
M.U.T.-
II/III
Data list
18 Ignition switch-ST (Refer to P.13D-66.)
NG
Check the ignition switch-ST and inhibitor switch system (Refer
to P.13D-62, INSPECTION PROCEDURE 29.)
OK
M.U.T.-
II/III
Data list
21 Engine coolant temperature sensor (Refer to P.13D-66.)
NG
Check the engine coolant temperature sensor system.
(RefertoP.13D-55,INSPECTION PROCEDUREFORDIAGNOSIS
CODE 21.)
NO
M.U.T.-
II/III
Actuator test
07 Fuel pump (Refer to P.13D-70)
NG
Check the fuel pump system.
(Refer to P.13D-60, INSPECTION PROCEDURE 28.)
OK
M.U.T.-
II/III
Self-Diag code
Are diagnosis codes displayed?
YES
Refer to P.13D-12, INSPECTION CHART FOR DIAGNOSIS
CODES.
Check battery voltage when cranking.
OK:
8 V or higher
NG
Check the battery. (Refer to GROUP 54
ï
Battery.)
Summary of Contents for Lancer 2005
Page 5: ...NOTES ...
