Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article in this section.

IDLE SPEED SPECIFICATIONS⁽¹⁾

Application

RPM

Prelude

1.6L

600-700

After ECU Reset

720-820

⁽¹⁾	Idle speed is set at operating temperature with headlights and cooling fan off and automatic transmission in Drive.

IGNITION TIMING (Degrees BTDC@RPM)

Application

Setting

Prelude

13-17@700-800 ⁽¹⁾

⁽¹⁾	600-700 RPM on California vehicles.