Fast Idle Speed

Fast Idle Speed Inspection/Adjustment

HOT ENGINE
1. Start the engine and warm it up to normal operating temperature (the cooling fan comes on).
2. Stop the engine and connect a tachometer to it.
3. Disconnect and plug the inside vacuum hose of the fast idle unloader.
4. To engage the fast idle cam, open and close the throttle fully while holding the choke valve closed.
5. Restart the engine.

Fast idle should be 2500 ± 500 rpm.





- If not OK, reset the fast idle speed by turning the screw shown.