What Causes Foreign Objects in the Engine Cylinder?

[StCameron]

There are several reasons for foreign objects in the engine cylinder. Reasons: In theory, there should be no metal foreign objects in the engine cylinder. Dust may fall in when replacing spark plugs, but it will be cleaned out through combustion and exhaust. If there are indeed metal foreign objects, they could be small screws or nuts dropped during maintenance. Metal fragments might be from a damaged cylinder gasket. Foreign objects in the cylinder can easily cause cylinder scoring. After grooves appear, the engine will produce knocking-like sounds during operation, with the sound varying with engine speed. Due to the grooves on the cylinder walls, the sealing condition of the cylinder deteriorates, allowing oil to enter the combustion chamber and burn, increasing oil consumption and causing the engine to emit blue smoke. Types of foreign objects inside the engine: Parts that have fallen off inside the engine; tools or parts accidentally left inside during maintenance; foreign objects sucked into the engine during operation.