Idle Speed & Mixture: Notes

NOTE: The following adjustments must be performed with air filter in good condition, ignition timing and valve clearance adjusted to specifications and engine at normal operating temperature.

Use a 7/32" Allen wrench to turn air screw clockwise to lower idle speed or counterclockwise to increase idle speed. Screw is located on plenum chamber.

NOTE: Mixture adjustment is not a normal tune-up procedure. Mixture should not be adjusted unless vehicle fails emission testing or air flow meter is replaced. If adjustment is necessary, use Feedback Monitor Tool (60973066).