Spark Plug ablation

When the owners discovered a scar on the top of spark plugs or destroyed, there electrode melting, erosion phenomenon, has already indicated that the destruction of spark plugs, spark plug should be replaced at this time. In the process of replacing the owner can check the erosion of spark plugs and the like color changes.

Symptoms 1: melting electrode and insulator is white

Diagnosis: This phenomenon shows that high temperature combustion chamber. This may be too much coke combustion chamber, resulting in valve gap too small, overheated exhaust valve caused further cooling device or the working poor. In the spark plug according to the specified torque tightening will also caused electrode melting, white insulator show phenomenon.