The engine is shaking. Don't clean the spark plug, nozzle and throttle as soon as you get up.

Audi A6L, a 2.4-displacement V6 engine licensed in 2007, travels about 230,000 kilometers. This Audi is Brother Pang's favorite. Self-priming +V6 does not burn engine oil, so the maintenance cost is low. Key costs can be repaired.

Vehicle failure: the owner gave the car to Brother Pang, mainly to repair the oil leakage. When the car is in D gear, the body is shaking and the engine is shaking. Because there are too many maintenance items, Fat Brother intends to share them with you step by step, starting with body shaking.

12 years old, almost 20,000 kilometers per year.

Regardless of engine jitter for the time being. First solve what we can observe with our eyes and judge by experience.

When removing the machine feet, it is necessary to gently jack up the engine with a tow top or a stake, and then remove the bracket and take it out.

The left engine foot was broken during disassembly, and half of it was connected with the engine.

Left foot.

The rubber inside is completely broken, and the aging and broken mechanical rubber can't absorb the buffer normally.

The rubber of the right machine foot will break quickly after aging and cracking.

You may ask, how did Brother Pang judge that the machine foot was damaged?

A: At this time, we can distinguish the running sound of the engine from the exhaust sound of the exhaust pipe. The sudden exhaust sound may be caused by the lack of cylinder in the engine.

B: When the D brake is stopped, the vibration of the car body is obviously felt, and the vibration frequency of the engine in the engine room increases, which can be judged as the cause of the engine foot.

C: Holding the steering wheel feels full of vibration. All cars will vibrate, but the vibration amplitude should be acceptable.

D: Observe the engine sinking, and the engine foot is aging and leaking oil. The upper bracket of the engine will press all the gravity on the edge of the engine foot shell, and we can remove it and observe it from the friction indentation. This method is only for some vehicles that are easy to disassemble.

Tighten the bracket before installing the machine feet.

Then load the car and tighten the screws.

Note: When tightening the screws on two machine feet, do not tighten the engine glue.

Fat brother concluded: this maintenance is to replace the foot glue, and there is no technical content. The key is to correctly judge the fault.

Welcome to inquire about the maintenance of used cars. Pongo will reply to you as soon as possible. Friends who like it can pay attention to it, and there will be more car knowledge to share with you later.