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2013 Paystar issues

Discussion in 'International Forum' started by Matt7760, Jan 17, 2023.

  1. Jan 17, 2023 #1
    Matt7760

    Matt7760 Bobtail Member

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    Feb 14, 2022
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    I have a 2013 Paystar that has the Maxxforce 13, it derated with the codes Spn 3055 fmi 0, and 3055 fmi 15. Checked the ground wires Infront of the starter, changed high pressure pump, checked for air in fuel, blew air threw the return lines. Nothing has worked, still getting the same codes after it warms up and truck loses power. I'm starting to lean toward maybe the fpr valve but looking for any suggestions. Thank you in advance!
     
    Matt7760, Jan 17, 2023
    Matt7760, Jan 17, 2023
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  3. Jan 18, 2023 #2
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Ok, at this time, throwing parts at it is not working. It needs proper troubleshooting. If all your tests are in spec and done right, then I would say you have a high pressure fuel leak between the injector and connection pipe which is measured by return fuel flow. Spec is no more than 20-22 ml of fuel return flow. If you have more, then you need to start isolating the injectors one by one to find which one is the culprit. Fuel pressure relief valve could be leaking, but usually once they do, they leak everything and you get a no start, or not temp related.
     
    Heavyd, Jan 18, 2023
    Heavyd, Jan 18, 2023
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