Cylinder pressure is one of the key factors for the proper operation of the engine. When there is no cylinder pressure in the engine, it usually means that there is some kind of malfunction that can lead to serious performance problems and potential damage. It is crucial to understand the causes of the lack of cylinder pressure and its effects, which can help us to better maintain and repair the motivation.
First, there is no reason for cylinder pressure.
Poor valve sealing: When the valve cannot be completely sealed, the compressive pressure in the cylinder will leak, resulting in insufficient cylinder pressure. This can be caused by valve wear, carbon deposits, or improper valve clearance adjustment.
Cylinder leakage: The cylinder itself may be cracked, worn, or damaged, resulting in compressed gas leakage, which can reduce cylinder pressure.
Incorrect valve phase: If the engine has an incorrect valve phase, the valve opens or closes at the wrong time, which can lead to insufficient cylinder pressure.
Piston Ring Leakage: Worn or damaged piston rings may cause gas to leak from the cylinder, reducing cylinder pressure.
Poor spark plug seat sealing: If the spark plug seat is not tightly sealed, it may lead to gas leakage, which can further affect the cylinder pressure.
Other possible causes include broken reed valves, leaking cylinder gaskets, excessive piston ring clearance, leaking crankcases, and piston caliper seizure.
Second, there is no influence of cylinder pressure.
Damage to the engine: Lack of cylinder pressure can lead to ignition system and injection system problems, such as faulty spark plugs, cylinder wires, and fuel injectors, which can lead to poor ignition. Long-term presence of such problems can damage the engine.
Affects combustion: Insufficient cylinder pressure can affect combustion efficiency, resulting in a decrease in power and torque. If caused by piston sealing problems, it can also lead to significant carbon deposits in the combustion chamber and deterioration of emissions.
In summary, the absence of cylinder pressure is a clear sign of engine failure and can be caused by a variety of reasons. In order to ensure the proper operation of the engine and extend its service life, we need to pay close attention to the cylinder pressure condition and deal with the related problems in a timely manner.