Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection

INSPECTION START

Check and adjust idle speed and ignition timing. (Refer to EF & EC-66.) Idle speed: M/T 750 ± 50 rpm, A/T 800 ± 50 rpm (in "N" position); Ignition timing: 10° ± 2° B.T.D.C.

Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load, then run engine at idle.

Turn off engine and remove air flow meter from vehicle.

Drill a hole in seal plug which seals variable resistor of air flow meter and remove seal plug.

Install air flow meter on vehicle. Start engine and warm it up until water temperature indicator reads normal operating temperature.

Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load, then run engine at idle speed.

Adjust mixture ratio with engine speed set at maximum by turning variable resistor.

Turn variable resistor of air flow meter one full turn counterclockwise.

Turn off engine and remove air flow meter from vehicle.

Insert new seal plug into variable resistor hole. Tap seal plug with a suitable bar, thereby installing seal plug on air flow meter.

Install air flow meter on vehicle.