Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection
EF & EC-402flowchartMixture ratio adjustment without CO-meter (max-rpm method).
[Without "CO"-meter]
Checking and adjusting mixture ratio [Without "CO"-meter]
INSPECTION START
Check and adjust idle speed and ignition timing. (Refer to EF & EC-397.) Idle speed: 850±50 rpm Ignition timing: 15°±2° B.T.D.C.
Check and adjust idle speed and ignition timing. (Refer to EF & EC-397.) Idle speed: 850±50 rpm Ignition timing: 15°±2° B.T.D.C.
Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load, then run engine at idle.
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.
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.
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.
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.
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.
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 variable resistor of air flow meter one full turn counterclockwise.
Turn off engine and remove air flow meter from vehicle.
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.
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.
Install air flow meter on vehicle.
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