What Causes a Motorcycle to Burn Spark Plugs?

1 Answers
StEmmett
07/30/25 12:28am
Here is a detailed explanation of the reasons why a motorcycle burns spark plugs: 1. Burning oil: Vehicles that burn oil are very prone to burning spark plugs. After stopping and restarting the vehicle, it may fail to start. The center electrode of the spark plug cannot concentrate the spark, and the spark plug is wet, causing the spark to disperse around during ignition, making it impossible to start the vehicle. The symptom is that the spark plug head tends to have oil and appears black with carbon deposits. It is necessary to check the piston rings and valve oil seals. 2. Clogged air filter: A clogged air filter leads to an overly rich air-fuel mixture, which not only makes it difficult to accelerate but also easily burns the spark plug. The air filter can be cleaned or replaced. 3. Dirty carburetor: A dirty carburetor causes an overly rich air-fuel mixture, which can also lead to burning spark plugs. The carburetor can be cleaned or replaced. 4. Faulty electronic ignition: A faulty ignition system is also one of the common causes of spark plug burning.
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