How to Deal with Engine Piston Slap?

[KimberlyLee]

When piston slap occurs mildly, the engine power becomes slightly unstable, the engine shakes severely, and it may cause the engine to overheat and emit black smoke. The solutions for engine piston slap are as follows: 1. If there is a knocking sound when the engine starts and runs at low temperature, but the sound disappears when the temperature normalizes, it can be left untreated temporarily and continue running. 2. If there is an obvious knocking sound when the engine temperature is normal, high-speed operation should be avoided as much as possible, and disassembly and repair should be carried out as soon as possible. 3. If the cylinder is severely out-of-round, scratched, or the gap between the piston and cylinder is too large, replacement should be performed. 4. If the connecting rod is found to be deformed, it should be replaced as much as possible.