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3406 b sudden loss of power

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by tj379, Feb 3, 2022.

Page 2 of 3
  1. Feb 4, 2022 #11
    wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    See if it will hold vacuum
     
    wore out, Feb 4, 2022
    wore out, Feb 4, 2022
    #11
    black_dog106, Oxbow and tj379 Thank this.
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  3. Feb 4, 2022 #12
    tj379

    tj379 Light Load Member

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    Nov 10, 2019
    ontario
    0
    well i made somefittings up off my vac pump and it wont pull down when hooked to thecafr, i put my thumb over fitting gage pulls rite down so i onow gage work i put on afr nuthin, so i guess put a diaphram and try or just a complete new unit?
     

    Attached Files:

    tj379, Feb 4, 2022
    tj379, Feb 4, 2022
    #12
  4. Feb 4, 2022 #13
    tj379

    tj379 Light Load Member

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    when i start pump it pulls mabe 3-4 inches if i leave it run it dont draw down anymore
     
    tj379, Feb 4, 2022
    tj379, Feb 4, 2022
    #13
  5. Feb 4, 2022 #14
    SmokinCAT

    SmokinCAT Road Train Member

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    Hillsboro, OH./ Adrian, MI
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    Most wouldnt notice that though as after it broken it was basically full fuel all the time.
     
    SmokinCAT, Feb 4, 2022
    SmokinCAT, Feb 4, 2022
    #14
  7. Feb 4, 2022 #15
    tj379

    tj379 Light Load Member

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    shes got a rip rite in it , thanks for the help gyes , on my way grab a new one
     

    Attached Files:

    tj379, Feb 4, 2022
    tj379, Feb 4, 2022
    #15
    bumper Jack and Oxbow Thank this.
  8. Feb 5, 2022 #16
    wore out

    wore out Numbered Classic

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    Jun 5, 2013
    CHASIN THE DEVIL'S HERD
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    I’m talking about the spool inside the AFRC. The spool that goes into the big piston
     
    wore out, Feb 5, 2022
    wore out, Feb 5, 2022
    #16
    Oxbow Thanks this.
  9. Feb 5, 2022 #17
    qak

    qak Bobtail Member

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    Dec 22, 2009
    topeka ks
    0

    This might sound stupid but check along the frame for a fuel prefilter, I had an old B model that did the same thing and all the shops said they changed the fuel filters but when I looked closer I found a small pre filter tucked along the drivers frame by the edge of the rear of the engine that had been there so Long it rusted, changed it out and it ran great
     
    qak, Feb 5, 2022
    qak, Feb 5, 2022
    #17
  10. Feb 5, 2022 #18
    SmokinCAT

    SmokinCAT Road Train Member

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    Hillsboro, OH./ Adrian, MI
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    was thinking you were talking inside the pump about the piece the hooks into lever inside the governor housing.
     
    SmokinCAT, Feb 5, 2022
    SmokinCAT, Feb 5, 2022
    #18
    wore out and Oxbow Thank this.
  11. Feb 6, 2022 #19
    tj379

    tj379 Light Load Member

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    Nov 10, 2019
    ontario
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    so when i reinstall the afr, do i put the head of the pin on the back side of that fork in the pump so it pulls on it im assuming?
     
    tj379, Feb 6, 2022
    tj379, Feb 6, 2022
    #19
  12. Feb 6, 2022 #20
    Star Rider

    Star Rider Road Train Member

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    Yes , the AFR pulls the fork
     
    Last edited: Feb 6, 2022
    Star Rider, Feb 6, 2022
    Star Rider, Feb 6, 2022
    #20
    tj379 Thanks this.
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