Poor Performance

POOR LOW SPEED PERFORMANCE (BACKFIRING AND/OR HARD STARTING)

1. Distributor incorrectly installed.
2. Defective distributor or igniter.
3. Incorrect ignition timing.

ENGINE STALLS OR MISFIRES

1. Defective high tension cable.
2. Defective cap, rotor and/or spark plug insulation.
3. Defective primary circuit.
4. Incorrect ignition timing.

ENGINE KNOCKS

1. Fuel octane rating too low.
2. Incorrect spark plug heat range.
3. Defective advance mechanism.
4. Incorrect ignition timing.

POOR HIGH SPEED PERFORMANCE, AND/OR ENGINE HESITATES ON ACCELERATION

1. Incorrect spark plug heat range.
2. Incorrect spark plug gap.
3. Defective governor advance mechanism.
4. Defective vacuum advance mechanism.
5. Defective ignition coil.
6. Incorrect ignition timing.