
The symptoms of a damaged car spark plug are: 1. Increased deposits inside the spark plug; 2. Melting or burning of the electrodes; 3. Malfunction of the ignition system; 4. Reduced power and sluggish acceleration; 5. Severe idle vibration; 6. Difficulty starting or sudden engine stalling. The function of a spark plug is: to introduce the high voltage electricity generated by the ignition coil into the engine cylinder, creating a spark between the spark plug electrodes to ignite the air-fuel mixture, thereby enabling the engine to operate. The effects of a damaged car spark plug include: 1. Lower power, reduced shunt resistance, unstable engine operation, resulting in lack of power when pressing the accelerator; 2. Significant car vibration during idle when parked; 3. Increased exhaust emissions beyond standards, leading to higher fuel consumption.


