What are the injectors on a GMC diesel?
What are the injectors on a GMC diesel?
The fuel pressure regulator in the high pressure pump and the pressure regulating valve in the rail control rail pressure. The injectors have a piezo stack instead of an electro-magnetic solenoid.
Where is the fuel pressure sensor on a GMC diesel?
The engine control module (ECM) controls the fuel pump pressures by using two fuel pressure regulators, fuel pressure regulator 1 is located on top of the fuel injection pump and fuel pressure regulator 2 (7) is located on a fuel rail (2). The fuel pressure sensor (4) provides a voltage signal to the ECM to indicated fuel rail pressures.
How to check high pressure pump in GMC diesel?
Buy Fuel Pressure Regulator 2 Unplug the fuel pressure regulator 2 (pressure control valve in left hand rail) electrical connector. Crank the engine for 15 seconds and verify there is a steady flow of fuel from the fitting on the rail. If there is not, proceed to checking/replacing the high pressure pump.
When to replace pressure control valve on GMC diesel?
Crank the engine for 15 seconds and measure the fuel from the regulator. The volume of fuel should be less than 10 ml. If it is more, replace the regulator. The high pressure seal on the pressure control valve is one time use. Do not remove the pressure control valve unless you are sure it is defective and you are replacing it.
The fuel pressure regulator in the high pressure pump and the pressure regulating valve in the rail control rail pressure. The injectors have a piezo stack instead of an electro-magnetic solenoid.
Buy Fuel Pressure Regulator 2 Unplug the fuel pressure regulator 2 (pressure control valve in left hand rail) electrical connector. Crank the engine for 15 seconds and verify there is a steady flow of fuel from the fitting on the rail. If there is not, proceed to checking/replacing the high pressure pump.
The engine control module (ECM) controls the fuel pump pressures by using two fuel pressure regulators, fuel pressure regulator 1 is located on top of the fuel injection pump and fuel pressure regulator 2 (7) is located on a fuel rail (2). The fuel pressure sensor (4) provides a voltage signal to the ECM to indicated fuel rail pressures.
How long does it take to replace fuel injection in GMC?
Crank or idle the engine for 15 seconds and measure the return quantity. If the quantity is greater than 3 ml in 15 seconds, replace it. Repeat for all eight injectors.
