lemon-mirror
:
Home
>>
BMW
>>
1998
>>
323is Automatic
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Controls - Trouble Shooting - No Codes
>>
Symptoms
>>
Engine Backfires
Engine Backfires
Air leak into/from exhaust system.
Intake manifold vacuum leak.
Burned valve.
Lean air/fuel mixture.
Incorrect ignition timing.
Incorrect valve timing.