Ignition system - troubleshooting
| Symptom | Reason(s) |
| The engine will not start | Poor contact at the battery terminals The battery is dead Oil got onto the breaker contacts Any of the ignition system wires has become disconnected The capacitor is faulty The high voltage wires or the inner surface of the distributor cap are damp Shut-off solenoid faulty Fuel system malfunction |
| The engine starts, but runs intermittently | One of the spark plugs failed The distributor cap cracked The runner cracked The centrifugal ignition regulator mechanism is worn out The spark gap of one of the spark plugs is set incorrectly The gap between the breaker contacts is set incorrectly The capacitor is faulty The ignition coil is faulty The ignition timing is incorrectly adjusted Poor grounding |
| The engine overheats and does not develop the required power | The centrifugal ignition regulator weights are stuck Puncture of a vacuum tube The ignition timing is incorrectly adjusted |
| The engine is detonating | Too early ignition The ignition regulator is stuck in the early ignition position The centrifugal ignition regulator weight spring is broken Fuel too low octane |
| The engine "catchs" but does not run | Open circuit in the ballast resistor circuit (where applicable) Fuel system malfunction |
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