Spark Knock/Detonation: XL-7
- Check for engine overheating.
- Check for faulty spark plug(s).
- Check ignition timing.
- Check for clogged fuel filter.
- Check for damaged or kinked fuel lines.
- Check for malfunctioning EGR system.
- Check for faulty Engine Coolant Temperature (ECT) sensor.
- Check for faulty Mass Airflow (MAF) sensor.
- Check for faulty fuel injector(s).
- Check for faulty Powertrain Control Module (PCM).
- Check for high engine compression.
- Check for faulty Knock Sensor (KS).