Why Does the Ignition Coil Burn Out?
2 Answers
The reasons why an ignition coil burns out are: 1. Excessive power generation, causing the ignition coil to be overloaded; 2. Excessive spark plug gap; 3. Poor fuel quality; 4. Incorrect cylinder compression ratio; 5. Program failure in the computer board; 6. Unstable power supply voltage; 7. Abnormal resistance in the high-voltage wires; 8. Secondary circuit short; 9. Excessive primary current from the ignition controller leading to overheating of the ignition coil. The steps to replace the ignition coil are: 1. Open the ignition coil cover on top of the engine; 2. Remove the ignition coil fixing screws; 3. Disconnect the ignition coil power plug; 4. Take out the ignition coil; 5. Insert the new ignition coil and tighten the screws; 6. After connecting the power plug, cover the top panel.
I recently encountered a problem with a burnt ignition coil, mainly due to poor heat dissipation. The engine compartment gets extremely hot, especially during traffic jams or prolonged uphill driving, where the coil temperature can soar to over 100 degrees Celsius. Under such conditions, the internal insulation material tends to age and become brittle, leading to high-voltage electricity directly causing a short circuit. It could also be an issue with the original design, as some cars have ignition coils positioned too close to the exhaust manifold, resulting in inadequate heat dissipation design. Additionally, don't overlook the impact of spark plugs; excessively large gaps can increase the demand for ignition energy, causing the coil to operate under overload for extended periods. It's recommended to regularly clean the engine compartment of dust and check the condition of the spark plugs.
