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Can the car start if the spark plug is broken?

1 Answers

Trent

07/29/25 12:46pm

If the spark plug is damaged, the car cannot start. A damaged spark plug can directly cause multiple issues such as leakage in the vehicle's ignition system, increased fuel consumption, and reduced power. The most significant problem is difficulty in ignition, which affects the normal operation of the vehicle. Severe erosion of the spark plug, such as blistering at the top, damage, or electrode melting and erosion, indicates that the spark plug is already damaged and should be replaced. Methods to determine if the spark plug is damaged: Remove the spark plug and observe its condition based on the following appearance colors. A normal spark plug's insulator skirt and electrode should appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a reddish-brown insulator skirt, with an electrode gap between 0.8-0.9mm, and no signs of electrode burn. If the spark plug has oil stains or deposits but is not damaged, it can continue to be used after cleaning off the oil and deposits. If the spark plug is severely damaged, showing signs such as blistering at the top, black streaks, cracks, or electrode melting, the cause of the damage should be identified. After troubleshooting, replace the spark plug with a new one. Additionally, if the spark plug appears black as if smoked, it indicates that the wrong type of spark plug (too cold or too hot) was selected, or the mixture is too rich, or there is oil leakage.

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