Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 110

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 -
No
Yes
Troubleshooting
Probable cause
D Defective detonation sensor
D Inappropriate heat value of the spark plug
Yes
Refer to P.13D-11, INSPECTION CHART FOR DIAGNOSIS
CODES.
No
Check the detonation sensor system. (Refer to P.13D-21, INSPEC-
TION PROCEDURE FOR DIAGNOSIS CODE 31.)
Probable cause
D Fuel leakage from injectors
13D-45