The average fuel consumption of 10 LaCrosse has been fluctuating too much. Why?

The oil consumption meter fluctuates greatly, which is generally caused by the following reasons:

First, the engine has too much carbon deposit, which leads to unstable fuel consumption. In this case, it is suggested to clean the throttle and air intake, then check whether the carbon deposition in the cylinder is serious, and then use the computer to re-match the throttle.

Second, the fuel consumption caused by the aging of spark plugs is too large. In this case, just remove the spark plug and check the gap of the spark plug. If the gap is too large, the spark plug needs to be replaced.

Third, the fuel quality is too poor, or the oil circuit is blocked. In this case, it is suggested to clean the oil path and nozzle and add some high-grade gasoline.

The LaCrosse is a brand-new mid-to high-end sedan launched by SAIC-GM on February 22nd, 2006. "Jun" represents a high-grade and high-grade image, and "Yue" means "breakthrough and transcendence".