I am an oil-to-gas car. Because of the unstable idle speed, I washed the accelerator and changed the spark plug, but it didn't take long. Ask the great god for guidance ....

How long has it been changed? How many kilometers have you run? If you run for many kilometers, it should be the high-voltage rail on your engine, and the strip equipment with pipes connected to the engine is seriously worn. You can choose to change to a better brand of high-voltage rail. Secondly, it may be your pressure relief valve.

Blocked or not properly adjusted, in the case of stable fuel? There must be something wrong with these two devices. Can you adjust the pressure reducing valve first? See if you can solve the problem of unstable idle speed, if you can't adjust it all the time. Can I buy a new hydraulic guide rail? Good quality hydraulic guide rail? Good idle stability? Personal experience, hope to adopt! ! !