Diagnosis By Symptom

Symptom Diagnosis Chart:

Conditions for Testing
- Battery fully charged.
- Fuel in tank.
- Temperature has a considerable effect on the test readings obtained. Engine and ambient air temperatures between 0°C to +40°C (32°F to 104°F).

Test Equipment
- Ignition timing instrument preferably with a 90° dwell-angle scale.
- Volt-ohmmeter with scales for 15V DC and 5V AC, a minimum sensitivity of 10,000 ohm/V, 0-5 ohm zero center scale, 0-5 kohm zero center scale.