What are the reasons for the diesel engine high-pressure fuel pump not delivering oil?

1 Answers
Tabitha
07/30/25 2:25am
Diesel engine high-pressure fuel pump not delivering oil can be caused by dirty diesel filters, dirty fuel injection pump, leakage, or ignition system leakage. Dirty diesel filters: It should be noted that there are three diesel filters. One is on the fuel pipe coming out of the fuel tank. Next to the fuel tank, there are two more on the engine. Dirty fuel injection pump: It must be calibrated. First, check the fuel system to see if the fuel lines are dirty or clogged, and test whether the fuel pressure is within the standard range. Leakage: Also, check if the throttle valve has carbon deposits, as an excessively dirty throttle valve can cause poor acceleration. Ignition system leakage: Check for any leakage, inspect the intake system for dirt blockage or air leakage.
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