Diagnosis By Symptom

ENGINE CRANKS, BUT WILL NOT START

Spark is insufficient or no spark
- Check ignition coil
- Check distributor
- Check power transistor
- Check spark plugs
- Check spark plug cables

Spark is good
- Check ignition timing

ENGINE IDLES ROUGHLY OR STALLS

- Check spark plugs
- Check ignition timing
- Check ignition coil
- Check spark plug cables

POOR ACCELERATION

- Check ignition timing
- Check spark plugs
- Check ignition coil

ENGINE OVERHEATS OR USES EXCESSIVE FUEL

- Check ignition timing