Fuel Injected
- Ensure engine is at normal operating temperature.
- Verify base timing is correct and that timing advance system is functional.
- Ensure exhaust system is not restricted.
- Ensure air cleaner is not clogged.
- Check EGR valve and solenoid for correct operation.
- Check purge control valve operation.
- Check coolant temperature vacuum switch operation.
- Check airflow meter for cracks.
- Verify correct airflow meter operation and resistance value.
- Ensure correct throttle position sensor adjustment and resistance value.
- Check operation of coolant temperature sensor and airflow meter.
- Check air valve and ISC solenoid.
- Ensure fuel system pressure is correct.
- Check intake air system and throttle body electrical connections.
- Check pressure regulator.
- Check coolant and intake air sensors.