Paccar mx13 very low power

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Transportauto, Aug 12, 2022.

  1. Transportauto

    Transportauto Bobtail Member

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    2013 pete mx13 epa 13 truck is dangerously slow I'm talking 45 mph on flat roads.
    Every so often the truck pulls great but majority of the time weak. No derate showing. Fuel pressure bounces around from 80psi -160psi 72psi-189psi very fast fluctuations. Boost only gets up to 28psi and injected fuel is showing fluctuations from 2.46-3.7 gr/cycle (any advice what to start would be great
     
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  3. GYPSY65

    GYPSY65 Road Train Member

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    spsauerland Thanks this.
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