Engine Backfires Into Exhaust System
- Check for leaking joints/connection in exhaust system.
- Check for holes in exhaust system.
- Check for incorrectly fitted distributor.
- Check for correct firing order of secondary ignition wires.
- Check for correct routing or secondary ignition wires.
- Check for faulty fuel injection system.
- Check power brake booster vacuum connections.
- Check heater/ventilation unit vacuum connections.
- Check crank case and fuel tank ventilation system.
- Check cylinder compression.
- Check for leaking gaskets.
- Check for faulty valves.