Section 02 TROUBLESHOOTING
Sub-Section 02 (ENGINE)
02-02-1
ENGINE 2
The following chart is provided to help in diagnosing the probable source of troubles. It should be used
as a guideline. Some causes or corrections may not apply to a specific model.
SYMPTOM ENGINE BACKFIRES
CONDITION NORMAL USE
Test/Inspection 1. Check spark plug(s).
a.Carbon accumulation caused by defective spark plug(s).
Clean carbon accumulation and replace spark plug(s).
2. Check cooling system.
a.Loose fan belt.
Adjust or replace fan belt (refer to TECHNICAL DATA 09).
b.Low antifreeze level.
Adjust antifreeze level. Then check clamps or hoses.
c.Defective tank cap.
Replace cap.
d.Air in system.
Bleed system.
3. Check ignition timing.
a.Timing is too advanced.
Set timing according to specifications (refer to TECHNICAL DATA 09).
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