High Quality New Diesel Fuel Injector Solenoid Valve 3080429 4307547 for Cummins M11 QSM11 ISM11 Engine Spare Parts

(1) The injector does not work. The main reasons are: ① The needle valve pair is severely worn; ② The needle valve pair is stuck or aged, resulting in incorrect injection advance angle or even no injection; ③ The needle valve pair is stuck by metal impurities, resulting in insufficient injection pressure or no injection; ④ The needle valve pair is not sealed tightly, causing diesel to leak into the combustion chamber or the injector return oil hole to be blocked.
(2) The injector does not spray or sprays less. The main reasons are: ① During the transportation or assembly of the injector, due to impact, vibration or impact vibration, the needle valve pair in the injector falls off, breaks, is damaged or breaks; ② The internal assembly of the injector pair is improper, such as the needle valve is stuck by foreign objects; ③ The fuel pressure is too low; ④ The injector return oil hole is blocked.
(3) The injector is blocked. The main reasons are: ① Too many impurities in the fuel; ② The fuel supply time is too late, resulting in incomplete combustion of the air; ③ The injector is blocked due to poor fuel quality. (4) The fuel injection pump is not working properly. The main reasons are: ① The fuel injection pump plunger is severely worn; ② The plunger and camshaft are too loose; ③ The high-pressure oil pipe is broken or leaking; ④ The sealing gasket between the fuel injection pump and the camshaft is damaged.