Engine Controls - Tests W/O Codes: Symptoms: Backfiring
- Ensure ignition timing is correct.
- Ensure timing belt has not jumped.
- Check distributor.
- Check for gasoline in oil.
- Ensure fuel injectors are not leaking.
- Ensure spark plugs fire strong Blue/White spark.
- Check ignition and coil circuit.
- Check engine speed sensor.
- Check throttle switch and connector.
- Check exhaust system.