olyellaferd
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- Aug 26, 2014
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I'm curious of how to test my fuel pump to see if it's starting to go out. Don't know a lot about these fuel pumps. I'm assuming since the injectors are opened based on oil pressure that the fuel pump on the rail is the only fuel pump. The truck stutters a slight slight bit at about 1/4 throttle under moderate load. I'm believing the fuel pump is starting to go out because it has new 175/30 injectors from MPD and new hpop, icp sensor and ipr valve. Truck has 227,000 miles and fuel filters are changed every other oil change (10k miles). Always run stanadyne fuel additive. The lubricity formula. Bought the truck with 199k miles