Genuine Mitsubishi Diamante Fuel Rail

Mitsubishi Diamante Fuel Rail Parts Questions & Experts Answers

• Fuel Rail
  MD319816
  Q: How to remove and install the Fuel Injector and Fuel Rail on 1.5L, 1.8L, and 2.0L SOHC engines on Mitsubishi Diamante?

  A:

  To remove and install components for the 1.5L, 1.8L, and 2.0L SOHC engines, after relieving fuel system pressure, disconnect the PCV and breather hoses, and spill containment, remove the high-pressure fuel line from the fuel rail. Detach the vacuum hose and fuel return hose from the pressure regulator, identify and unhook the electrical connectors from each injector, remove the complete fuel rail with attached injectors, do not drop any injector. Dispose of the old injector insulators, gently remove the injectors from the fuel rail, and fit new insulators and O-rings lightly oiled. In the case of removal of the fuel pressure regulator, replace the O-ring and check for free rotation before tightening. Once the injectors are reinstated in the fuel rail in a free rotating manner, attach the delivery pipe and fuel rail to the engine using bolts. Connect wiring harnesses, hoses, and the negative battery cable. Pressurize the fuel system and check for leaks. For the 1.6L and 2.0L DOHC engines, follow similar steps but check the injector resistance specifications. Loosen the bolts on the fuel line and injector and remove them as well for the 2.4 L engine. For 3.0L and 3.5L engines, the negative battery cable must be disconnected, the cooling system drained, and the intake plenum removed before disconnecting the fuel line and hoses. After removing injectors, install new grommets and O-rings, and make sure everything is in place. The "clicking" sound produced by the injector while the engine is running can be checked using a mechanic's stethoscope or screwdriver. If they all click, and the issue persists, check the fuel pump pressure and perform a cylinder drop test. Check the condition of the driver circuit using a "noid" light. Follow the wiring diagram for the particular engine type, which will indicate what resistance specifications should be for the injectors. If the injectors or noid light do not light up, you have a wiring issue, PCM issue, or a bad driver circuit.