The Following Methods Can Be Used To Handle Piston Knocking

(1) After starting the engine, there is a knocking sound when running at low temperatures. After the temperature is normal, the sound disappears and can be left untreated and continued to run.
(2) When the engine temperature is normal, there is a noticeable knocking sound, and high-speed operation should be avoided as much as possible. Disassemble and repair as soon as possible.
(3) After removing the cylinder head and removing the piston, if it is found that the cylinder is severely out of round, pulled, or the gap between the piston and the cylinder is too large, it should be replaced by replacing the cylinder liner, piston, and piston rings.
(4) If deformation of the connecting rod is found, it should be replaced as much as possible.