1997 F350 7.3 fuel leak/no power

Discussion in 'Tow Rigs and Trailers' started by ramjo, Aug 2, 2017.

  1. ramjo

    ramjo Well-Known Member

    Joined:
    Apr 13, 2010
    Location:
    Marion,NC
    So the old 350 has had a fuel leak somewhere on top of the motor for about as long as I've had it (2 years).....so it's probably been leaking for longer than that. Ran fine, no issues associate with it. A month or so ago I fired it up and headed down the road and about 1/4 mile down the road it went to a rough idle and zero throttle response. I let it set running for a few minutes until it eventually smoothed out and returned to normal. It will run fine after that until it sets for a few hours....who are the prime leak suspects?
     
  2. a_kelley

    a_kelley mechanical fixer

    Joined:
    Jan 26, 2010
    Location:
    Rutherfordton
    Fuel pump, water separator drain valve, hoses.
     
  3. Loganwayne

    Loganwayne #BTL

    Joined:
    Feb 15, 2013
    Location:
    Clyde, North Carolina
    Water separator drain valve
    They are know for causing fuel leaks if that's what it is replace all the o rings for 15-20 bucks

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  4. a_kelley

    a_kelley mechanical fixer

    Joined:
    Jan 26, 2010
    Location:
    Rutherfordton
    Heck you can get the whole drain valve for like $20-40 new.
     
  5. AV8

    AV8 Well-Known Member

    Joined:
    Oct 8, 2005
    Location:
    Oxford
    I rebuilt my fuel bowl last year. Got a kit from DieselOrings. Also check the fuel lines coming out of the bowl. The pumps have a weep hole that'll drip fuel as well.




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  6. Loganwayne

    Loganwayne #BTL

    Joined:
    Feb 15, 2013
    Location:
    Clyde, North Carolina
    but there are other o-rings on the fuel bowl. my wasn't leaking out of the drain valve.
     
  7. mysterync

    mysterync Well-Known Member

    Joined:
    Feb 22, 2008
    Location:
    boone nc
    As far as the misfire/rough idle goes do a buzz test and see if you get any circuit codes. As mentioned above, just buy a diesel orings rebuild kit for the fuel bowl.

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  8. ramjo

    ramjo Well-Known Member

    Joined:
    Apr 13, 2010
    Location:
    Marion,NC
    Thanks for the suggestions, I finally managed to mess with for a few hours. I found one leak in the fuel filter sensor. I'm going to plug it off and see what other leaks I can find
     

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