What is the replacement interval for ignition coils?

1 Answers
DiReed
07/29/25 5:59pm
Ignition coils typically need replacement every 100,000 kilometers. As a core component in the engine ignition system, the ignition coil primarily functions to intermittently convert the vehicle's low-voltage electricity into high-voltage electricity. The replacement procedure for ignition coils is as follows: 1. Open the ignition coil cover on top of the engine and remove the fixing screws using a pentagonal wrench; 2. Disconnect the ignition coil power plug, gently pry it up with a screwdriver, and remove the ignition coil; 3. Install the new ignition coil, tighten the screws, and reconnect the power plug. Causes of ignition coil failure include: 1. The engine not running while the ignition switch remains on for an extended period; 2. Engine overheating, causing the coil's insulating varnish to melt and fail; 3. Excessive spark plug electrode gap, increasing the ignition coil's load and leading to high-voltage coil breakdown, resulting in short circuits or open circuits; 4. High-voltage line breakage, preventing the generated high-voltage electricity from flowing, which can easily cause the high-voltage coil to break down.
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