- Another potential cause of black spark plugs is an oil leak within the engine. If oil is leaking into the combustion chamber, it can come into contact with the spark plugs and cause them to become fouled. This can prevent the spark plugs from generating a strong spark, leading to misfires and a decrease in engine performance This can prevent the spark plugs from generating a strong spark, leading to misfires and a decrease in engine performance
This can prevent the spark plugs from generating a strong spark, leading to misfires and a decrease in engine performance This can prevent the spark plugs from generating a strong spark, leading to misfires and a decrease in engine performance
black spark plug.
Having problems installing oil seals? The part has had many updates in recent years, which has totally changed the installation process. In this blog, our specialists will give you information and installation tips so that these oil seals no longer cause difficulties during your overhaul or repair job.
Common materials used in oil seals include nitrile rubber, fluorine rubber, silicone rubber, acrylic rubber, polyurethane, polytetrafluoroethylene, etc. When selecting the material of the oil seal, the compatibility of the material with the working medium, the adaptability to the working temperature range and the ability of the lip to follow the rotating shaft at high speed must be considered. When the oil seal is working, the temperature of its lip is higher than the working medium temperature by 20~50°C. Attention should be paid when selecting the oil seal material. The working range of the oil seal is related to the material used for the oil seal: the material is nitrile rubber (-40~120°C), Aggreko rubber (ACM) -30~180°C, fluorine rubber (FPM) -25~300°C.


The most common oil seals are the ERIKS types R, RST, M and MST, which correspond respectively to types A, AS, B and BS according to DIN 3760/ISO 6194.
