What are the symptoms of a damaged car distributor?
1 Answers
Symptoms of a damaged car distributor are as follows: 1. No spark, the engine does not operate properly and fails to start. 2. The engine may exhibit knocking, shaking, poor acceleration, and abnormal exhaust smoke. 3. High-voltage leakage. Below are methods to diagnose distributor faults: ① Turn on the ignition switch and start the engine. If the ammeter fluctuates between 3～5A but the engine shows no signs of ignition, the issue may lie with the high-voltage coil of the ignition coil, the central high-voltage wire, or a leaking capacitor. If the ammeter shows no current or no change in current, it indicates an open circuit in the low-voltage circuit. ② Turn on the ignition switch and use a test lamp to connect to the movable contact terminal of the circuit breaker (remove the distributor cap and ensure the breaker contacts are open). If the lamp lights up, it indicates an open circuit fault in the breaker contacts. Rotate the crankshaft to observe if the cam lobe of the distributor shaft can open the breaker contacts. If the contacts cannot be opened, the breaker gap is improperly adjusted. If they can be opened, continue checking the gap and contact surface of the breaker contacts. ③ If the lamp does not light, check if the capacitor is short-circuited. If the capacitor is normal, use the test lamp to connect to the primary coil terminal of the ignition coil. If the lamp lights, check for an open circuit in the primary coil. If it does not light, there may be an open circuit in the ignition switch or the circuit between it and the positive power supply.
