Symptoms of Worn or Failed Valve Stem Seals
Valves regulate the amount of fuel and air mixture allowed to burn in the cylinder. While the valves have guides or sleeves to prevent combustion gases from passing through, seals on top of the valves prevent oil in the valve cover from being drawn into the engine. The seal is usually made of high-strength rubber and is mounted on top of the valve stem inside the small collar. When valve seals begin to wear or fail, they can produce some distinct and unique symptoms. KDIK Oil Seal Factory Motorcycle Automobile Spare oil seal 1.Lack of acceleration The ultimate indicator of a poor valve seal is a lack of acceleration power. You can also perform a compression test to see if this is the case. Higher levels of compression will indicate that this is a valve seal problem. However, low levels of compression indicate a problem with the piston rings. 2.Oil Consumption Poor valve seals can lead to excessive oil consumption. In otherwise norm...