What to do if the Toyota Corolla has valve oil leakage?
2 Answers
The solutions for valve oil leakage in Toyota Corolla are as follows: 1. It is necessary to remove the timing chain cover and engine valve cover, then clean and apply sealant before installation. Additionally, replacing the rubber ring of the crankshaft position sensor in your vehicle will solve the problem. 2. If the oil at the crankshaft position sensor area forms droplets, it is recommended to replace the seal ring of the crankshaft position sensor as well. These repairs do not require removing the engine, and the repair time will take one day because the removed parts need to be thoroughly cleaned. The parts that need to be replaced include: valve cover gasket, five seal rings, timing tensioner gasket, and sealant.
I also encountered valve oil leakage issues with my Toyota Corolla, which was really annoying. At the time, I noticed oil stains in the engine compartment and a strange smell, so I knew it might be the aging of the valve seal. I first cleaned the area to locate the leak, confirmed it, and then bought new gaskets to try replacing them myself. However, doing it myself was quite troublesome—if not done properly, it could lead to even worse oil leakage. I remember that time, the oil leakage could also cause low oil levels, engine overheating, and damage to the piston rings. In the end, I took it to a professional repair shop. The mechanic said that oil leakage is common in older Corolla models, and the average repair cost is only a few hundred dollars. However, if left untreated, oil leaking onto other components could increase the risk of fire. He advised car owners to regularly check the lifespan of the seals, as they generally need replacement every 5 years or so. Keeping the car in good condition is key. Don’t wait until minor issues turn into major repairs that cost much more.
