Engine Surges
- Check spark plugs.
- Check for adequate spark with a spark tester.
- Check for high resistance in spark plug wires.
- Check fuel pressure.
- Check EVAP control system.
- Check for clogged fuel filter.
- Check for damaged or kinked fuel lines.
- Check for vacuum leaks.
- Check ignition and valve timing.
- Check for faulty PCM.
- Check for malfunctioning electronic fuel injection system.
- Check for malfunctioning EGR valve.