Phenomenon: There is a rhythmic and crisp metallic “knock, bang, and bang†sound in the cylinder. The diesel engine is black smoke, powerless, difficult to start, and sometimes reversed.
Reasons: 1. There are too few gaskets between the fuel injection pump and the gear chamber joint surface. 2. The timing gear is not installed correctly.
Diagnosis: Loosen the three injection pump tightening nuts evenly so that the fuel pump can be moved outwards. If the knocking sound is eliminated, it can be judged that the oil supply time is too early.
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