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  1. 6.7 Problems Forum (2011-2016)
    Bought a 2011 F250 with a damaged HPFP. Threw only one code p2291 (low fuel pressure while cranking). FVCV was covered with metal shavings. Changed HPFP, FVCV, FPCV, FPR, LFP , all 8 injectors, programmed IQA with ids, dropped tank and cleaned it. bled the system by turning the key a few times...
  2. 6.4 Motor Problems
    I am in the process of Rocker arm replacement on my 6.4PS due to intake popping sounds that just started. Prior to starting the teardown, I did some diagnostic scanning using my AE Proline. Here are some of the results (from my head as my laptop is at work) Idle Fuel rail pressure = ~5500psi...
  3. 6.4L Performance Parts Discussion
    Looking at some 100% over injector nozzles, wondering if the stock HPFP can handle it. i know the stock HPFP after a 300hp tune is barely able to keep up. so dont know if id need other supporting mods, or just a dual fuelers/ uprgaded pump
  4. Diesel Diagnostics
    I have a 2008 f250 6.4 and had a code show up the other day p0088 which is fuel rail pressure to high. All of the problem I am having seem to have happened after I installed a spartan tuner. After returning the truck back to stock after being put into limp mode numerous times because of the...
  5. 6.4L Performance Parts Discussion
    As the title says. Got a KEM 310 tune and want to know how much I can throw at her until she goes
  6. General 6.4L Discussion
    Long story short my 6.4's fuel was contaminated with dirt, probably from pumping fuel at a gas station somewhere. My fuel filters and oil are changed at frequent intervals. A couple dealerships want $9,000 to replace every component in the fuel system. It's not Ford's fault, it's not my fault...
  7. 6.4L Problems Forum
    So I changed my filters last week on my new to me 2008 F250 (140k miles) after I purchased it and noticed some discoloration at the bottom of the upper fuel filter housing. I didn't think too much of it while changing the fuel filter until I read a post with some information about the...
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