In the routine maintenance of a car, spark plugs are a vital component responsible for generating an electrical spark to ignite the mixture. However, when you replace the spark plug and suddenly find that the spark plug has organic oil on it, what could be going on? This article will provide an in-depth breakdown of the possible causes and corresponding repair recommendations.
What's going on with organic oil on spark plugs?
There is usually only one possibility that oil is found on the spark plug, and that is a leak from the pad of the valve chamber cover. Normally, the spark plug should be dry, as it requires neither oil nor lubrication when working. However, if there is an oil leak in the pad under the valve cover, the oil can seep into the spark plug hole. Aging of the seals is the main cause because the seals are responsible for preventing oil from entering the spark plugs.
What's going on with organic oil on spark plugs?
The seal is made of rubber around the spark plug and has four rings that seal the spark plug in the middle and an external seal around it to prevent oil leakage. Over time, seals may deteriorate, causing seal failures and oil slowly seeping into the spark plug holes.
What's going on with organic oil on spark plugs?
If oil is found on the spark plug, it is advisable to repair it in time, i.e. replace the valve chamber cover pad. If not disposed of in time, the ignition coil may remain soaked in oil, affecting its lifespan. At the same time, the spark plug will also be surrounded by oil, blocking the close contact between the ignition coil and the spark plug, forming an oil film, affecting the ignition performance, and making the vehicle feel the power drop when driving.
What's going on with organic oil on spark plugs?
Another possibility is that burnt oil was found on the head of the spark plug, which indicates that the vehicle is burning oil. This condition may require further investigation to determine the specific cause.
There is no need to replace the spark plug until the spark plug has reached the replacement mileage, if only the oil is found and no other problems are found. Simply clean the oil, including cleaning the ignition coil, to keep it in normal use. When the replacement mileage is reached or there is a malfunction, consider replacing the spark plug.
By understanding the possible causes of oil found on spark plugs and repair recommendations, car owners can better maintain their vehicles, ensuring that they maintain good performance and longevity on the road. The maintenance of the spark plug not only helps to extend the life of the ignition system, but also improves the driving experience of the vehicle.