Cummins ISX Fuel Pump

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by etianlongoria, Feb 25, 2020.

  1. etianlongoria

    etianlongoria Bobtail Member

    Feb 25, 2020
    Hi, I have a 2012 Peterbilt 386,with a Cummins ISX, but this truck came with a engine that was manufactured by Cummins ReCon ,with date 01/18/16, now I have a few questions, is this fuel pump from 2016 also?I have to be worried with this fuel pump?, any way to know if this fuel pump has ceramic or steel plungers?
  2. boneebone

    boneebone Road Train Member

    Mar 13, 2009
    If it’s a Recon, it’s probably because the original fuel pump made a window in the original block and the entire engine was replaced by Cummins.

    The Recon most likely has the updated fuel pump with the steel plungers.
    Last edited: Feb 25, 2020
    Hulld and bzinger Thank this.
  3. Hulld

    Hulld Road Train Member

    Oct 19, 2015
    Upstate NY
    Could have steel plungers but don’t let your guard down.
    How many miles?
    I am told they still have had some failures with the updated pump.
    spsauerland Thanks this.
  4. Goodysnap

    Goodysnap Road Train Member

    Jul 12, 2017
    I would most definately check or replace the oil bypass valve and make sure it's the updated one. Cheap insurance if you ask me. Tough call being a 2016 rebuild.
    spsauerland Thanks this.
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