No pressure in fuel system after sitting idle for 5 days

Discussion in 'Peterbilt Forum' started by 98pete, Jan 24, 2011.

  1. Jan 24, 2011 #1
    98pete

    98pete Bobtail Member

    1
    0
    Jan 24, 2011
    Snowville, UT
    0
    No fuel pressure in a 98 pete with a 3406E motor. If I let the truck set any longer than 4 days I loose the pressure in the fuel system. Ive changed 2 check valves on the filter housing. My lines are all good, no leaks. Im changing the splitter valve tomorrow. Idont think its an injector because it dont smoke when I start it up. Any suggestions? Thanks
     
    98pete, Jan 24, 2011
    98pete, Jan 24, 2011
    #1
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  3. Jan 24, 2011 #2
    little cat 500

    little cat 500 Road Train Member

    2,061
    1,109
    Jan 17, 2010
    Abbottstown PA
    0
    orings on the injectors maybe
     
    little cat 500, Jan 24, 2011
    little cat 500, Jan 24, 2011
    #2
  4. Jan 26, 2011 #3
    trbuster

    trbuster Bobtail Member

    3
    1
    Feb 8, 2009
    Lenoir,NC
    0
    transfer pump?
     
    trbuster, Jan 26, 2011
    trbuster, Jan 26, 2011
    #3
  5. Jan 26, 2011 #4
    doublew

    doublew Light Load Member

    68
    7
    Oct 17, 2010
    Kansas
    0
    had the same probs on a 95 pete with 3406c did injector o-rings last weekend and it fixed
     
    doublew, Jan 26, 2011
    doublew, Jan 26, 2011
    #4
  7. Jan 26, 2011 #5
    JohnP3

    JohnP3 Road Train Member

    1,594
    684
    Feb 21, 2010
    Rock Creek B.C. Canada
    0
    The fuel is contained between the pressure /return check valve, and the transfer pump if you have no priming pump. If you have a priming pump then the check valves contain it also. Unless you are getting fuel in the oil it has nothing to do with the injectors.
    After you shut the truck down, with a fuel pressure gauge installed, remove the return line, if it dribbles then that is the problem area. If it is good no dribbling then remove the suction line off the fuel transfer pump. If it is draining back then, it is the problem.
    Just a thought!
     
    JohnP3, Jan 26, 2011
    JohnP3, Jan 26, 2011
    #5
    gonzo01 Thanks this.
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