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Home >> Volkswagen >> 1992 >> Corrado L4-1781cc 1.8L SOHC SC >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Timing >> Testing and Inspection >> Ignition Timing, Checking/Adjusting >> California
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California

Ignition timing, checking and adjusting

Requirement
- engine oil temperature 80°C (176°F) minimum

- switch ignition OFF




- 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

With VAG 1367 engine tester




- disconnect (blue) coolant temperature sensor (arrow)
- raise engine speed to a level between 2000 to 2500 RPM and check ignition timing point (displayed directly on VAG 1367 engine tester)
- checking 4° to 8° BTDC



With strobe light




- disconnect (blue) coolant temperature sensor (arrow)
- raise engine speed to a level between 2000 to 2500 RPM and check ignition timing point




- point strobe directly at flywheel timing mark
- checking 4° to 8° BTDC

If NO
- adjust ignition timing by loosening and turning distributor until specification is obtained
- adjust 6° ± 1° BTDC

- active fault memory and then erase