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1975 cat 4 cyl diesel pre combustion cup3/14/2024 Manifold fuel injection systems on average operate at about 45 Psi (Pounds per square inch) Side feed and top feed fuel injectors are used in manifold fuel injection systems. The basic manifold fuel injection system consist of a fuel pump, fuel pressure regulator, fuel lines, fuel filter, fuel rail, fuel injectors and the engine control unit or engine management system. There are two types of fuel injection systems, manifold fuel injection and direct fuel injection systems. To understand why leaking fuel injectors are troublesome and dangerous some understanding of the fuel injection system is required. It is suggested that you have your leaking fuel injector sent to Injector RX for testing and cleaning. The average DIY fuel injector cleaning project and most automotive repair shops does not have the proper diagnostic equipment or the ability to test leaking injectors or clean them properly. The fuel injector pintle, ball or disc seat due to dirt (Repairable – ultrasonic fuel injector cleaning)įuel injector leak testing should be done under operating pressure.The fuel Injector pintle, ball or disc seat due to damage or corrosion (Not repairable – Discard Injector). The fuel injector body at the top of the fuel injector.Top and bottom fuel injector O-rings (Repairable – Replace O-rings).
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