Operation CHARM
: Car repair manuals for everyone.
Home
>>
Porsche
>>
1989
>>
928 S4 V8-4957cc 5.0L
>>
Repair and Diagnosis
>>
Specifications
>>
Electrical Specifications
>>
Ignition Timing
Ignition Timing
Fig. 51 Timing Mark:
NOTE:
Ignition timing
is controlled by the ECU and is not adjustable. Check with engine warm. If not within specification,
Testing and Inspection
At
idle speed
775 ± 25 rpm
Timing
10° BTDC ±2°