California

Ignition timing advance, checking

Requirements
- engine oil temperature 80°C (176°F) minimum
- coolant temperature sender OK

- read Fault memory and check for any stored faults, correct if necessary and then erase Fault memory




- connect VAG 1367 engine tester using VAG 1367/8 inductive pickup
- to display engine RPM and ignition timing point

CAUTION! Be certain that TDC sensor is properly seated in recess on flywheel housing.

- start engine and let idle




- disconnect (blue) coolant temperature sensor (arrow) and record ignition timing at 2300 RPM




- re-connect coolant temperature sender harness connector (arrow) and check ignition timing at 4500 RPM
- ignition timing value must advance at least 30° above the previously recorded value

If NO
- replace Digifant control unit (J 169)
- even if no fault is displayed while reading fault memory