What are the common faults in the ignition system?
2 Answers
Common faults in the ignition system include spark plug failure, delayed ignition, and premature ignition. Below is a partial introduction to common ignition system faults: 1. Spark plug failure: The tip, electrode, and spark plug shell are often covered with a thick layer of soft, black-gray powdery deposits. The symptom of this fault is that the insulator tip, electrode, and spark plug shell are coated with engine oil. 2. Delayed ignition: The symptoms include a heavy sound from the muffler, backfiring in the carburetor during rapid acceleration, high engine coolant temperature, and weak vehicle performance. If the ignition timing is incorrect, it can be adjusted to the specified value. 3. Premature ignition: The symptoms include unstable idle operation, easy stalling, and severe engine knocking sounds during acceleration.
When I drove my old car, the ignition system always had problems. Common faults included severe carbon buildup on the spark plugs, making it hard to start, especially after prolonged low-speed driving; aging ignition coils with weak output, causing the car to shake violently during startup; damaged high-voltage wires leaking electricity, leading to energy loss; ECU malfunctions causing erratic control signals; and weak battery voltage affecting startup. I recommend checking the spark plugs every 20,000 kilometers and replacing them to prevent carbon buildup. If not repaired, fuel consumption will skyrocket and damage the engine. Prolonged neglect could lead to a breakdown on the road. Modern cars have many sensors, and a faulty crankshaft position sensor can also cause ignition failure. During regular maintenance, ask the technician to scan with a diagnostic tool to save hassle and money, avoiding major repairs.
