Under What Conditions Should Spark Plugs Be Replaced?

1 Answers
OAshlyn
07/29/25 12:46pm
Spark plugs should be replaced under the following conditions: 1. After driving 40,000 to 60,000 kilometers; 2. Abnormal engine shaking during acceleration; 3. Vehicle idling with noticeable vibration; 4. Difficulty starting the engine; 5. Sudden engine stalling. The procedure for replacing spark plugs is: 1. Turn off the engine and remove the spark plug cap; 2. Unscrew the old spark plug counterclockwise; 3. Screw in the new spark plug clockwise; 4. Reattach the spark plug cap; 5. Verify proper installation and test start the engine. Causes of spark plug damage include: 1. Insufficient spark energy during ignition; 2. High air-fuel ratio in the fuel mixture; 3. Engine overheating; 4. Excessively dirty air filter; 5. Excessively high idle speed; 6. Severe carbon buildup and use of low-quality gasoline; 7. Damaged valve oil seals or crankcase ventilation valve failure.
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