Generally, the common method used to check the sealing of engine cylinder is to useSeal detectorCylinder air leakage amount and air leakage rate, measurement of cylinder pressure, crankcase channelingThere are several methods to measure the vibration of air volume, intake pipe vacuum, and abnormal noise caused by excessive wear of the cylinder piston group.

Measure the cylinder compression pressure, because under the cooperation of the cylinder pressure, the viscosity of the engine oil and the cylinder piston group, the adjustment of the valve mechanism isWhether it is correct, the sealing of the cylinder gasket and other factors, so when measuring the pressure of the engine cylinder, the cylinder piston group can be diagnosedsealing condition.

In summary, the factors that affect the sealing performance of automobile engine cylinders include cylinder wear, piston ring damage, piston wear, and valve seat damage., valve guide wear, cylinder gasket damage, valve clearance and other problems.