What are the symptoms of a faulty car distributor?
1 Answers
When a car distributor is damaged, the following symptoms may appear: No spark, the engine does not operate properly and fails to start. At the same time, the engine may experience knocking, shaking, poor acceleration, and abnormal exhaust smoke. High-voltage leakage. Below are the methods to diagnose a faulty car distributor: Turn on the ignition switch and start the engine. If the ammeter fluctuates between 3～5A but the engine shows no signs of ignition, it indicates a fault in the high-voltage coil of the ignition coil or the central high-voltage wire, or a capacitor leakage fault. If the ammeter shows no current or no change in current, it indicates an open circuit in the low-voltage circuit. Turn on the ignition switch and use a test lamp to connect to the movable contact terminal of the circuit breaker (at this time, the distributor cap should be removed to keep the circuit breaker contacts open). If the lamp lights up, it indicates an open circuit fault in the circuit breaker contacts. Rotate the crankshaft to observe whether the cam lobe of the distributor shaft can push the circuit breaker contacts open. If the circuit breaker contacts cannot be pushed open, it indicates improper adjustment of the circuit breaker gap; if they can be pushed open, continue to check the circuit breaker contact gap and the contact condition of the working surface. If the lamp does not light up, check whether the capacitor is short-circuited due to breakdown. If the capacitor is normal, continue to use the test lamp to connect to the primary coil terminal of the ignition coil. If the lamp lights up, check whether there is an open circuit fault in the primary coil; if it does not light up, there is an open circuit fault in the ignition switch or the circuit between it and the positive terminal of the power supply.
