What is the general reason for the engine jitter of Buick Excelle?

The question you asked is very professional. You should be a sales consultant or after-sales service, right?

Engine vibration. There are two reasons, internal and external.

First, internal: engine knocking. This problem comes from the engine compression ratio. Good engine power of American cars is an advantage. Excelle's compression ratio is 9.5: 1, which is a high compression ratio in its class. This compression ratio requires high fuel for automobiles. It is necessary to add 97# in theory, but domestic cars will adjust the engine, delay the ignition advance angle and reduce the combustion pressure, so that adding 93# to the gasoline knock engine will reduce the knock and improve the fuel economy of consumers. However, only adding 93# oil can not completely solve the problem of compression ratio. Over time, there is too much carbon in the engine combustion chamber, which makes it easier to knock. Is your car filled with 93 # gasoline? )

Second, external: Excelle's engine damping spring problem. This is a technical cost problem. The impact is there, but the key is the first reason.

Your question is actually not a case, nor is it a big problem for Excelle. All cars, more or less, will have some insurmountable technical problems. Don't care too much. Talking to customers can be ignored. When selling cars, remember that the advantages and disadvantages of all cars coexist. It depends on how you guide customers with words.

I used to be a sales consultant for Shanghai Volkswagen, but now I don't do it. Now I am the regional manager of GM GMC.

Let's go Brother. Some people starved to death, while others died. See how you do it yourself.