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3406 5EK 500 horse no power

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 44mag, Jan 27, 2018.

  1. Jan 27, 2018 #1
    44mag

    44mag Bobtail Member

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    Jan 27, 2018
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    I hav e a 96 Pete with 500 hp cat Not enough power to pull the hat off your head. I have a 96 Mack with a 350 that will out pull the Pete. I have had turbo rebuilt, new boost sensor,new fuel pump. I have tested cooler and have run overhead. Old and new pump both show 75 pounds pressure at 2100rpm. Both boost sensors will only build to 18 lbs. Do I have ecm problem or is it fuel? Stumped can anyone help!
     
    Last edited: Jan 27, 2018
    44mag, Jan 27, 2018
    44mag, Jan 27, 2018
    #1
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  3. Jan 27, 2018 #2
    spsauerland

    spsauerland Road Train Member

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    May 31, 2010
    West Harrison, In
    0
    Cat spec is 78 psi @ idle and 93 psi @ high idle. Checked pressure when you have it under load? Could be pressure regulator valve in fuel manifold block. What shape are your fuel suction hoses in? If original due for new ones!
     
    spsauerland, Jan 27, 2018
    spsauerland, Jan 27, 2018
    #2
    Oxbow and SAR Thank this.
  4. Jan 27, 2018 #3
    Superhauler

    Superhauler TEACHER OF MEN

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    100,733
    Jan 30, 2010
    keep stroking.
    0
    What he said^^^^^. Hook a fuel pressure gauge up and see what it is at low idle then bump it up to 1500 rpm. It should increase. Then with gauge still hooked up shut engine off and watch gauge. If the pressure falls off to zero instantly then the check valve is bad. If pressure is good when running and holds pressure after shutdown then it is ok. Check CAC for leaks. If original fuel lines they maybe swelled up causing a fuel flow restriction.
     
    Superhauler, Jan 27, 2018
    Superhauler, Jan 27, 2018
    #3
    Oxbow and SAR Thank this.
  5. Jan 27, 2018 #4
    44mag

    44mag Bobtail Member

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    Jan 27, 2018
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    Just bought truck 3 months ago. Everything seems to be original . I will replace both items on Monday. Thanks for the help.
     
    44mag, Jan 27, 2018
    44mag, Jan 27, 2018
    #4
    Oxbow Thanks this.
  7. Jan 27, 2018 #5
    spsauerland

    spsauerland Road Train Member

    4,296
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    May 31, 2010
    West Harrison, In
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    Share what you find and what fixes it. Helps others out!
     
    spsauerland, Jan 27, 2018
    spsauerland, Jan 27, 2018
    #5
    Oxbow Thanks this.
  8. Jan 27, 2018 #6
    44mag

    44mag Bobtail Member

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    Jan 27, 2018
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    I have checked cac holds air for30 min. At 25 lbs.i was thinking the same thing on fuel lines. This is really frustrating will hook gage to fuel system on Monday. Thanks .
     
    44mag, Jan 27, 2018
    44mag, Jan 27, 2018
    #6
    Oxbow Thanks this.
  9. Jan 27, 2018 #7
    44mag

    44mag Bobtail Member

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    Jan 27, 2018
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    I will definitely share what I find. And I appreciate everyone’s help. Have a great day!
     
    44mag, Jan 27, 2018
    44mag, Jan 27, 2018
    #7
    Oxbow Thanks this.
  10. Jan 27, 2018 #9
    6nz-kw

    6nz-kw Bobtail Member

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    13
    Dec 28, 2013
    Jamestown OH/Holly Hill FL
    0
    I have a 2000 w900L 6NZ,and the fuel vents was bad,I hear that a new injector wiring harness,on those old E motors really helps out horsepower,the fuel lines should be replaced,if they are original.
     
    6nz-kw, Jan 27, 2018
    6nz-kw, Jan 27, 2018
    #9
    Oxbow Thanks this.
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