Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
Pontiac
>>
2003
>>
Vibe Base, AWD
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System - Trouble Shooting - No Codes
>>
Symptom Diagnosis
>>
Detonation/Spark Knock
>>
Ignition System Checks
Ignition System Checks
Check the spark plugs for the correct gap.
Inspect the spark plugs for excessive deposits that can glow and pre-ignite the air/fuel mixture.
Check the spark plugs for the correct type and the correct heat range.