LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 1987 >> Seville V8-252 4.1L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Timing >> Adjustments >> Ignition Timing Adjustment
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Ignition Timing Adjustment


All except computer controlled eng., disconnect and plug distributor vacuum hose.

1981-84: 6.0L (368) FI eng., disconnect pink/black wire with connector from tan/black wire by distributor.

1981-86: 1.8L (112) 2V, 2.0L (122) 2V,, 4.1L (252), 1986-90 5.0L (307): disconnect 4-wire connector at distributor.

1982-84: 4.1L (250), disconnect green reference signal connector.

1982-86: 2.0L (122) FI, 2.8L (173) FI, disconnect EST bypass connector (single connector tan/black wire).

1985-90: 4.1L (250), 4.5L (279), 5.7L (350), connect a jumper between terminals A & B of the diagnostic connector.

If "Check Engine" light comes on during this procedure, remove ECM fuse to clear.



scientia non olet · About LEMON Manuals