Is the 6.5 diesel lift pump still running?
Is the 6.5 diesel lift pump still running?
You should be able to hear and feel the 6.5 diesel lift pump running. Another method to verify the pump’s operation is to open the fuel filter water drain in the engine compartment with the engine running. If fuel sprays from the end of the hose and the truck continues to run, the pump is still working.
What are the symptoms of a lift pump failure?
The most common symptoms of lift pump failure are slightly harder starting and low power. This pump is located underneath the driver’s seat area inside of the frame rail and should produce around 4 PSI of pressure to the injection pump.
How does the lift pump work on a diesel engine?
If the fuel lift pump is operating, diesel fuel will spray from the end of the hose. If the engine continues to idle, then the lift pump is functioning, as it is delivering more fuel to the fuel system.
Why is my fuel pump not working on my 98?
AMG had problems with windshield wiper fluid getting into the harness and corroding connections on my 98. There is also a small relay that actually powers the fuel pump. Check to see that it’s working.
Can a 6.5L fuel lift pump be replaced?
This video is about replacing the 6.5L diesel engine fuel lift pump on GM full size old body style (OBS) trucks from Chevrolet and GMC. In this scenario the vehicle was operating fine, until the fuel filter was replaced, at which point the lift pump is discovered to be defective during bleeding air from the new filter.
Why is the lift pump on my diesel engine not working?
If the fuel lift pump is operating, diesel fuel will spray from the end of the hose. If the engine continues to idle, then the lift pump is functioning, as it is delivering more fuel to the fuel system. If the engine dies, then the lift pump is not functioning properly.
How do I check the lift pump on a 6.5 Turbo Diesel?
How do I Check the Lift Pump on a 6.5 Turbo Diesel? The lift pump on a GM 6.5 liter turbo-diesel engine provides diesel oil to the fuel pump, which in turn supplies fuel to the injectors. When a lift pump malfunctions, the engine’s fuel pressure will drop.
AMG had problems with windshield wiper fluid getting into the harness and corroding connections on my 98. There is also a small relay that actually powers the fuel pump. Check to see that it’s working.
