Operation CHARM
: Car repair manuals for everyone.
Home
>>
Chevy Truck
>>
1988
>>
K 2500 Truck 4WD V8-454 7.4L
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Computers and Control Systems
>>
Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Positions
>>
Spark Advance
Spark Advance
Indicates varying degrees of spark advance.