Ignition Timing

1. Ensure engine is at normal operating temperature. Connect timing light to engine. Connect tachometer to proper location. See Fig 1.
2. Install jumper wire between proper terminals of engine check connector. See Fig 9. Ensure idle speed is within specification. See appropriate IDLE SPEED SPECIFICATIONS table under IDLE SPEED & MIXTURE. Ensure base timing is within specification. See IGNITION TIMING  table.
3. Adjust timing by turning distributor.
4. Remove jumper wire from engine check connector and ensure advance timing is within specification. See IGNITION TIMING  table. Tighten distributor hold-down bolt or cam position sensor bolt. See TORQUE SPECIFICATIONS  table.

Application		(1) Base Timing	(2) Advance Timing
Camry		10 @ 650	13-22 @ 650-750
Celica
1.6L		10 @ 800	0-20 @ 800
2.0L		10 @ 750-800	12-21 @ 750-800
2.2L		10 @ 650	13-22 @ 650-750
Corolla
1.6L (4A-FE)		10 @ 700-800	0-20 @ 700-800
1.6L (4A-GE)		10 @ 800	9-19 @ 800
MR2
2.0L		10 @ 750-850	12-21 @ 750-850
2.2L		10 @ 650	13-22 @ 650
Pickup & 4Runner		5 @ 750-850	10-14 @ 750-850
Previa		5 @ 750	12 @ 750
Tercel		10 @ 800	7-17 @ 800
(1) Check ignition timing with transmission in Neutral, and jumperwire connected between proper terminals of check connector. (2) Check ignition timing with transmission in Neutral, and jumperwire removed from check connector terminals.