Inspection Procedure 20

INSPECTION PROCEDURE 20
Knocking

COMMENT
- In cases such as the above, the heat value of the spark plug may be in appropriate or low fuel quality.

TROUBLESHOOTING HINTS
The most likely causes for this case:
- In appropriate heat value of the spark plug.

DIAGNOSIS
STEP 1. Check the following items.
(1) Check the following items and repair or replace the defective items.
a. Check the spark plugs.
b. Fuel quality, octane level.
c. Check if the foreign materials (water, kerosene, etc.) got into fuel.
Then confirm that the malfunction symptom is eliminated.