During the maintenance process, lift out the engine, remove the instrument panel, straighten the sheet metal and reinstall it. After everything is installed, there is a fault in the test run. At the following points

When I came to the place where the car broke down, I checked the oil and found that there was no oil on the oil dipstick. I looked carefully under the engine and found no oil leakage. I can be sure that the car must be short of oil and smashed the tiles.

That is, align the scale on the valve cover. There are 5 holes on the gear of the accessory case, and there is also a hole on the front cover of the accessory case. The hole in the gear is the timing mark of the oil pump gear.

The engine suddenly locked. Although the final problem was found, the supercharger leaked, but the inter axle differential burned

If the exhaust port of double-h shift valve continues to exhaust outward when the shift lever is shifted from low gear to high gear, it is obvious that there is low gear but no high gear when the gas vehicle is driving.

Careful analysis shall be made according to the fault phenomenon. Sometimes the same fault may cause multiple abnormal phenomena, and multiple faults can cause the same abnormal phenomenon at the same time.