Operation CHARM
: Car repair manuals for everyone.
Home
>>
Buick
>>
1988
>>
Riviera V6-231 3.8L VIN C SFI
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Ignition System
>>
Ignition Timing
>>
Adjustments
Ignition Timing: Adjustments
This vehicle uses a Computer Controlled Coil ignition system (C3I). This system consists of 3 ignition coils which are controlled by the ECM. There is no timing adjustment, timing is computer controlled.