What does engine punching mean?
1 Answers
Engine punching refers to a fault where the engine cylinder gasket is burned and damaged, resulting in poor sealing of the engine cylinder and combustion chamber. This fault has different names in different regions. Some places call it "cylinder gasket blowout," while others refer to it as "cylinder gasket punching" or simply "punching." Below is additional information: 1. Symptoms of engine punching: Reduced power output, difficulty starting, water mixing with engine oil in the cylinder, which reduces the lubrication effect of the oil, increases wear between the piston and cylinder, and may lead to cylinder scoring and eventual scrapping. In more severe cases, the oil pan may be flooded with coolant, causing significant trouble. When severe punching occurs, the engine may have difficulty starting, and white, watery vapor may be emitted from the exhaust port. At this point, attention should be paid to the working condition inside the cylinder. 2. Cylinder gasket: Commonly known as the cylinder head gasket, it is installed between the cylinder head and the cylinder block. Its primary function is to seal the joint surface between the cylinder block and the cylinder head to prevent gas leaks, coolant leaks, and oil leaks. 3. Cylinder gasket materials: Most cylinder gaskets are made of asbestos board. Some are made with copper or iron sheets on both sides of the asbestos board, while others consist of steel sheets on both ends with flexible latex-asbestos board in between. The combustion chamber holes are reinforced with double or single-layer metal edges to prevent combustion gases from damaging the asbestos layer.
