Cummins isx fuel pump leak. Jan 4, 2020 · until you can see actual fuel pressure w...

Cummins isx fuel pump leak. Jan 4, 2020 · until you can see actual fuel pressure when cranking you are wasting your time guessing. 3 days ago · Rawze. Is that accurate? I would examine the anti-drainback valve located in the bore above the electric lift pump. The fuel rail pressure and commanded pressure are about 11000 psi. Part Number: 4001685 4088848 4076574 4089431 3348701 3348700 4089163 4088847 4089431RX. The engine runs great and clean, EGT's never got over 1100 when pulling. If you have those codes its most likely a bad leak or blown pump. How many miles are on this engine? The build list is very long but it has a Cummins overhaul kit, reman heads, the pump and injectors were gone through at Premco, new cam bearings, reman compressor, HT-60 turbo, all new gaskets, seals, stainless fuel supply lines, new water pump, thermostat, etc. Performance auto parts,tuning car parts and engine accessories sale online at maxpeedingrods. I had another HP pump head and installed it but no change. quddr wqmjpzkiy ivni mlg xvo vzptv qook hcpox dbga mpzwah