Engine Will Not Start (Engine Turns Over); Engine Hard To Start; Engine Misfires, Runs Irregularly; Engine Continually Backfires - TGB EST 1000 Service Manual

ENGINE WILL NOT START (ENGINE TURNS
OVER)
1. Fouled or defective spark plug.
- Replace.
2. Defective CPS.
- Check operation of CPS and replace if
necessary..
3. Defective trigger wheel.
- Check.
4. Defective ignition circuit.
- Check fuse of fuse box, ignition coil and
wiring condition.
5. Defective fuel pump.
- Check fuel pump.
6. Defective fuel injectors or circuit.
- Check fuel injectors.

ENGINE HARD TO START

1. spark plug faulty, fouled or worn out.
- Check spark plug condition, replace if
necessary.
2. Low fuel pressure.
- Test fuel pressure.

ENGINE MISFIRES, RUNS IRREGULARLY

1. Fouled or defective, worn spark plugs.
- Check/verify heat range/gap/replace.
2. Damaged trigger wheel/loose CPS.
- Check.
3. Defective ignition circuit.
- Check ignition coil, fuse, and wiring
condition.
4. Poor engine grounds.
- Check/clean/repair.

ENGINE CONTINUALLY BACKFIRES

1. Fouled, defective spark plus.
- Check/replace.
2. Damaged trigger wheel/defective or loose
CPS. - Check.
8-1. ELECTRIC SYSTEM
8-1-3