Is the idle speed of Buick LaCrosse engine 525~600 normal?

The idle speed is a little low, generally around 800, but this does not affect the use. Generally, cleaning up carbon deposits is enough.

Idle speed means that the engine runs with no load, and it only needs to overcome the friction resistance of its internal parts and does not output power to the outside. The lowest speed to maintain the stable operation of the engine is called idle speed, which is one of the five basic working conditions of the engine. The idle speed of an engine with good working performance is generally 550-800 rpm.

Idle speed can be adjusted by adjusting throttle opening and idling oil supply. Generally speaking, the minimum idle speed is the best when the engine does not shake in the idle speed range and the acceleration performance is good.

When you have a satisfactory mount, you will have to deal with idling every day. Simply put, idling means that the engine is "not working".

Idle speed phenomenon, that is, the car is parked while the engine is "chugging"-burning engine oil for nothing is really a waste! At this time, the mechanical work generated by gasoline combustion is consumed by the friction of internal parts.