Engine cylinder pulling refers to the obvious longitudinal mechanical scratches and abrasions on the inner wall of the cylinder within the motion range of the piston ring. In other words, the piston ring makes the cylinder wall rough, which is the result of the high local temperature between the piston ring and the cylinder wall and the adhesion and wear of the metal after melting, which leads to the difficulty in starting the engine or the automatic flameout.
When pulling the cylinder, the friction between the piston and the piston ring and the cylinder wall will lose the sealing performance, which will lead to the reduction of the compression pressure of the cylinder, the rapid decline of the output power, the abnormal sound of the engine, the serious oil burning, the blue smoke from the exhaust pipe and even the explosion of the crankcase.
Use the engine reasonably at ordinary times and develop good driving habits. Don't overload the engine, don't slam on the accelerator, and don't start without water. In addition, attention should be paid to timely maintenance of the lubrication system to prevent mechanical impurities and carbon deposits from mixing into the engine oil and aggravating the wear of the cylinder liner.