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truck died on the road again. help me, please!

Discussion in 'The Hokey Ass Message Board' started by general gow, Aug 17, 2009.

  1. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    truck starts easy, idles great. when i put the throttle to the floor it wants to conk out.

    on the road, this seems to translate to running okay in first and 2nd gear, and when it gets up to cruising speed, it sputters, and dies. after a minute or so, it'll restart and run for a little bit, then do it all over again.

    so, i suspect that perhaps the carb is getting flooded? how do i know? and how do it fix it?

    help me fellas, i need this beast running for moving day. and, it's in my mom's driveway. can't live there long.


  2. FiddyFour
    Joined: Dec 31, 2004
    Posts: 9,008


    what carb? float sticking maybe? tap the side of the carb a little
  3. I would think you would notice black smoke from exhaust if your are flooding while driving. If it was driving normaly before, I would check fuel filter, fuel pump, clogged line, dirt in tank, etc.
  4. Roadsterpu
    Joined: Nov 10, 2008
    Posts: 895


    Are you sure it is flooding? Does it happen all the time or only after heating up? If only when hot could be vapor lock.

  5. JohnEvans
    Joined: Apr 13, 2008
    Posts: 4,883

    from Phoenix AZ

    Sounds more like lack of fuel. Try removing the gas cap and running it. Manual or electric fuel pump? If electric is it mounted low near the tank? getting hot and quiting?
  6. moter
    Joined: Jul 9, 2008
    Posts: 1,137


    does it have a vacuum advance? If so disconnect the hose and see what happens. May have a bad breaker plate..or if electronic ignition may have a bad pickup.
  7. BenD
    Joined: Mar 5, 2001
    Posts: 1,591

    Alliance Member

    Filter, Regulator, tank vent blockage possibly?
  8. Vicious_Cycle
    Joined: Mar 27, 2006
    Posts: 107


    Probably starving it for fuel.

    When it dies, hop out and see if your accelerator pump works. That will give you an indication of whether or not it's running the bowl empty.

    Also, take a look at a plug right after it dies. I'll bet it's not black.
  9. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    no, i'm not sure. but, i can tell you that when i first start it, and let it idle a minute or two, then floor the throttle, it will often quit running.
  10. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    holley 2v. 2300 i think.
  11. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    manual pump.

    gets WORSE when hot. but always seems to want to quit when the throttle gets floored.
  12. onlychevrolets
    Joined: Jan 23, 2006
    Posts: 2,307


    sounds like a fuel problem to me too...filter , pump, or float.... I hope you get it worked out.
  13. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 26,421

    Jalopy Joker

    As stated before, can be a dirty gas tank and pick line is being blocked. Had this happen to me with a '47 Ford - replaced everything back to gas tank, same problem. Turns out that someone had used some gas tank sealer that partly came loose by pick up tube. Soon as I accelerated it died out, start right up and soon as I accelerated again conk out. Replaced gas tank and ran good for years.
  14. I would say change the fuel filter! I have had the same problem before!
  15. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    fuel lines look good. new-ish filter that flows well. filter is about 6 inches down line from carb. gas cap looks right. tank fill is behind passenger door, looks stock to me.
  16. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    also, it has a full tank of gas pumped yesterday. just fyi.
  17. cvstl
    Joined: Apr 15, 2009
    Posts: 1,464

    from StL MO
    1. H.A.M.B. Chapel

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 11"><meta name="Originator" content="Microsoft Word 11"><link rel="File-List" href="file:///C:%5CDOCUME%7E1%5Ccvance%5CLOCALS%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:punctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; mso-bidi-font-size:12.0pt; font-family:Arial; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman";} @page Section1 {size:8.5in 11.0in; margin:1.5in .7in 1.0in .7in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]--> As said before, you can see if the accelerator pump is pumping fuel down the carb throat immediately after it dies, or you can install an inline plastic see-thru filter and watch to see if there is enough gas being pumped up. Sounds like it is gradually running out of fuel for some reason&#8230;. Clogged filter, restricted fuel line&#8230;
  18. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    good stuff to go on, guys. thanks. i'll let you know how i make out. i'm going to start with a new filter, and checking the lines again. oh, and i'll give the carb a knock with the handle of my screwdriver to see if the float is stuck too.

    i'll check in again this evening when i have a chance to look at it after work.
  19. JAWS
    Joined: Jul 22, 2005
    Posts: 1,846


    Just for kicks, pull a plug.

    Sounds like you are actually running out of gas, like a fuel pump is failing or clogged filter.
  20. mtflat
    Joined: Jan 28, 2003
    Posts: 422


    I had a clear plastic label off a can of something drifting on the bottom of my pickup tank once. Every so often it would float across the outlet and shut things down. Took a long time and a several tank removals before it floated out into the 5 gal bucket. FWIW

    I vote with the rest on a fuel obstruction of some kind. Point of this is don't over look the odd stuff.
  21. guiseart
    Joined: Apr 7, 2005
    Posts: 3,872


    I had one jump timing on me that sounded like that... drove me nuts looking for fuel problems... check timing real quick?
  22. Kail
    Joined: Jul 7, 2007
    Posts: 827

    from Austin, TX

    does it stumble and then catch back up? if so its a carb issue, accelerator pump not giving it the juice it needs when you step on it.

    if it just doesn't like extra throttle at all, then it could be starving for fuel

    if its not a pump filter and fuel line issue, consider a carb rebuild, you could have issues with a float, gunked up fuel inlet valve a number of things
  23. RichFox
    Joined: Dec 3, 2006
    Posts: 10,006


    Is there a built in filter in the fuel inlet on the carb. My 77 Ford had a aftermarket filter I installed that filtered nothing. Screen Filter in the inlet fitting was almost pluged. Acted like yours. Pull it out and see if you can blow through it.
  24. BinderRod
    Joined: Jul 9, 2006
    Posts: 1,736


    Did it run ok before you filled it? If it did you have water in the gas. Put a couple cans of heat in to take the water out
  25. harpo1313
    Joined: Jan 4, 2008
    Posts: 2,156

    from wareham,ma

    if it was flooding you would smell it,i suspect flow problem also.wasnt the truck sitting for a while?ive got this two barrel looking for a home if its a fit.i know its a runner and it was given to me so i can give it again.bolt pattern3 3/4 across the front 2in front to rear.
  26. general gow
    Joined: Feb 5, 2003
    Posts: 6,278

    general gow
    Staff Member

    it has been sitting. about 6 months or so. i'll let you know if i can use it. i'lltake measurements. i'm gonna try the fuel filter thing first too.
  27. Hank
    Joined: Feb 18, 2005
    Posts: 234

    from Wisconsin

    My guess is lack of fuel.

    Do you have one or two fuel filters on it? A lot of people forget about the filter IN the carb. It's usually behind the big nut where the fuel line hooks up.

    It could be a pin hole in of the fuel lines. Climb under it and look at every inch of the fuel line from the tank to the carb. If there is a wet spot there is a hole. If fuel can get out, air can get in. I just had this problem on my beater truck. It had similar symtoms.

    Good luck.
  28. RatRod65GMC
    Joined: Sep 12, 2008
    Posts: 43


    Sounds like you may have crap in the fuel tank. Had the same prob with my GMC when I first got it (first gear, second gear, third gear... die). Couldn't flow enough fuel to keep it running. REmoved and blasted all the sediment & rust out of the tank and never had that problem again.
  29. lostforawhile
    Joined: Mar 23, 2008
    Posts: 4,160


    remember your idle circuit doesn't take much fuel, might be just enough getting through to let it idle but not enough to run, they sell a good diagnostic gauge from actron that measures both vaccume and fuel psi, it's pretty cheap,most auto parts stores have it. t it in and watch the gauge pressure when you hit the gas. that will tel you a lot.
  30. BigMikeC
    Joined: Apr 18, 2006
    Posts: 449


    Sounds pretty typical of a cracked fuel line right at the tank.

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