Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection
EF & EC-224prose procedureGA16DE engine. A/C-equipped: check with A/C OFF. A/T models: check idle rpm/ignition timing/mixture ratio with shift lever in "N".
Preparation
- 1Make sure that the following parts are in good order. Battery; Ignition system; Engine oil and coolant levels; Fuses; E.C.U. harness connector; Vacuum hoses; Air intake system (Oil filler cap, oil level gauge, etc.); Fuel pressure; Engine compression; Throttle valve.
- 2On air conditioner equipped models, checks should be carried out while the air conditioner is "OFF".
- 3On automatic transaxle equipped models, when checking idle rpm, ignition timing and mixture ratio, checks should be carried out while shift lever is in "N" position.
- 4When measuring "CO" percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
- 5Turn off headlamps, heater blower, rear defogger.
- 6Keep front wheels pointed straight ahead.
- 7Make the check after the radiator fan has stopped.