6 5 Diesel Lift Pump Test

6 5 diesel engine how to bomb proof.

6 5 diesel lift pump test. 6 5l diesel fuel system the fuel system on the 6 5l gm diesel is simple and straight forward. A low pressure fuel pump lift pump mounted on the driver side framerail draws fuel from the tank pushes it through the fuel filter housing and then into the injection pump. Crank the engine while you aim a test light at the lift pump to ascertain proper operation. It is sad day for the gm 6 5 lift pump as while the specs call for a 10 to 14 psi pressure and the ip will take up to 18 spec and a little over in reality no pump manufactured today as a replacement will meet that but this one.

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. You should be able to hear and feel the 6 5 diesel lift pump running. Typically the random stalls caused by the pmd will become more frequent as the failure worsens.

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. 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. The pmd fsd pump mounted driver is by far the 1 cause of 6 5l no starts at least 90 if your truck experienced random stalling like someone shut the key off before ultimately refusing to start again the pmd is very likely the issue.

If the truck dies you may need a new pump. 1994 6 5 turbo diesel no power solved duration.