Mitsubishi FUEL Manual page 64

13A-64
INSPECTION PROCEDURE 20
Knocking
In cases as the above, the cause is probably that the detonation control is defective
or the heat value of the spark plug is inappropriate.
MUT-II Self-Diag code
Are diagnosis codes displayed?
Does knocking occur when driving with the sensor disconnected?
At this time, use the MUT-II to check if the timing is retarded
compared to when the detonation sensor connector is connected.
Check the following items.
D Spark plugs
D Check if foreign materials (water, alcohol, etc.) got into fuel.
INSPECTION PROCEDURE 21
Dieseling
Fuel leakage from injectors is suspected.
Check the injectors for fuel leakage.
MPI <4G6> -
No
Yes
Troubleshooting
Probable cause
D Defective detonation sensor
D Inappropriate heat value of the spark plug
Yes
Refer to P.13A-8, INSPECTION CHART FOR DIAGNOSIS
CODES.
No
Check the detonation sensor system. (Refer to P.13A-32, INSPEC-
TION PROCEDURE FOR DIAGNOSIS CODE P0325.)
Probable cause
D Fuel leakage from injectors