Spark plugs on the sediments

Spark plug electrodes insulator between the top and sometimes viscosity sediments. Do not underestimate the owners of such sediments.

Serious this situation may cause the engine can not work normally. In the clean spark plugs, and vehicles can be temporarily normal operation, but will be soon after in similar circumstances. In fact, spark plugs, sediment there is only a superficial, but this may be other mechanical components, vehicle problems signal.

Symptoms 1: Spark Plug on oily sediment

Diagnosis: When a spark plug on the oily sediment, it is that oil has entered the combustion chamber. If there is only an individual spark plugs, oil sediments, it may damage the valve rod seal caused. But if the cylinder is all the spark plugs are Nien such sediments, showed that the cylinder oil leapt up there. Generally speaking, the air filter and ventilation devices plug circumstances, a cylinder easily leapt up oil phenomenon.

Symptoms 2: Spark plug on the black sediment

Diagnosis: Spark plug electrodes and internal black sediments, usually in the mixed gas cylinder that Guonong. Owners can increase engine speed operation, and continued a few minutes to burn to stay in the top electrode layer of black soot.