As the most important, precise, and

As the most important, precise, and complex assembly part in a car, the automobile engine has a high probability of failure, and the location of the failure is also diverse. In our daily repair work, the most common engine failures include abnormal jitter, carbon deposits, oil leakage, water leakage, high temperature, oil burning, increased oil, abnormal noise, engine fire, failure to start, etc. Keywords: car engine; research; malfunction;