Idle Speed & Ignition Timing

If adjustable, ensure idle speed and ignition timing are set to specification. See IDLE SPEED & CO LEVEL and IGNITION TIMING tables below. For idle speed adjustment procedures, see ADJUSTMENTS article. Ignition timing is not adjustable.

IDLE SPEED & CO LEVEL

Application

Idle RPM

⁽¹⁾ CO%

Non-Turbo

775

0.6

Turbo

750

0.6

⁽¹⁾	With O2 sensor disconnected. CO level is measured before catalytic converter.

IGNITION TIMING (Degrees BTDC @ RPM)

Application

⁽¹⁾ Timing

940

12 @ 725-825

⁽¹⁾	Ignition timing is computer-controlled and is not adjustable.