However, after inspection, the master found that the problem of frequent shortage of engine oil can be large or small, and engine oil combustion only accounts for a small part. The real cause of oil shortage is oil leakage. As shown in the figure below; The engine oil pan and chassis parts are leaking oil, which looks serious.
It was further confirmed by the captain that the source of oil leakage came from the joint between the base of the oil filter element and the oil radiator. The master said that the oil leakage at the joint is usually caused by the aging of the sealing apron, which is a common problem of Volkswagen EA888 engine. But in order to solve this problem, only a new sealed apron can be replaced, and the owner agrees to replace it with a new one. As shown in the figure below, the main engine has removed the intake manifold.
After removing the intake manifold, it can be seen from the position indicated by the green arrow in the figure below that a large amount of oil leakage has accumulated between the oil radiator and the cylinder block, which proves that the engine oil leakage problem has existed for a long time. At the same time, in the orange area, you can see that both ends of the intake manifold and intake valve are covered with a lot of carbon deposits. The owner said that the carbon deposition here
The following figure shows the new gasket to be replaced in this maintenance. 1 is the oil filter base gasket installed under the oil filter base, and 2 is the oil radiator gasket installed between the oil filter base and the oil radiator. The master said that the cost of these two gaskets is very low, but it is a bit troublesome to replace them.
After about 20 minutes, the master removed the gasket of the oil filter base and the gasket of the oil radiator. The following picture shows the gasket removed from the old oil filter base, and the master is comparing it with the new gasket.
The following figure shows the base of the oil radiator. Its main function is to use antifreeze to cool the engine oil and prevent the engine from overheating. The master said that Audi Volkswagen has this on many models. The benefits are not obvious, but there is a lot of oil leakage.
Because there was too much oil leakage in the past, the engine cylinder and other parts had oil stains, so the master had to install two gaskets before cleaning up the oil stains. The master said that if the oil is not cleaned, it will affect the heat dissipation of the engine and there is a safety hazard of spontaneous combustion. As shown in the figure below; The captain is cleaning the oil in the tank.
Finally, after cleaning up the oil pollution, the master installed the intake manifold and other components in place and began to inspect the car. No oil leakage has been found at present. The master asked the boss to run for a while, then went back to the factory for review, and the boss agreed. This is a maintenance process that Audi Q5 oil often lacks.
Million car purchase subsidy