发动机着火不好,一般只注意检查喷油嘴、柱塞副、供油时间、配气相位、气门间隙等,但往往忽视出油阀对着火的影响。其实,当出油阀密封性能下降后,使发动机着火不平稳,起动困难,冒烟严重,燃烧不好,产生大量积炭,加速活塞与缸套的磨损,油耗上升,功率下降。1.出油阀与发动机着火关系出油阀是单向阀,减压环带与 Engine ignition is not good, generally only pay attention to check the nozzle, plunger pair, fuel supply time, with gas phase, valve clearance, but often ignore the oil valve on the fire. In fact, when the sealing performance of the oil valve is decreased, the ignition of the engine is not stable, the starting is difficult, the smoke is serious, the combustion is not good, a large amount of coke is deposited, the wear of the piston and the liner is accelerated, the fuel consumption is increased and the power is decreased. 1. Outlet valve and engine ignition relationship The valve is a one-way valve, vacuum belt and