Idle Speed & Ignition Timing

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

IDLE SPEED & CO LEVEL

Application

Idle RPM

⁽¹⁾ % CO Level

Cooling Fan On

800

0.6

Cooling Fan Off

825

0.6

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

IGNITION TIMING (Degrees BTDC @ RPM)

Application

⁽¹⁾ Timing

850

10 @ 800

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