340 turns over, got spark, won’t fire and run

Small Block Mopar Engine

  1. 121gigawatts

    121gigawatts Member

    Messages:
    15
    Likes Received:
    0
    Joined:
    Jun 20, 2018
    Location:
    Near Chicago
    Local Time:
    8:06 AM
    hey fellas, got a 69 GTS. 1971 340 4 speed. Bought it nearly a year ago. It ran when I initially got it. In August, Took it on the road once to get some gas. LOTS of hesitation when I accelerated, stalled out as soon as I pulled in the garage. Fixed a clutch linkage issue and took it around the block. More hesitation and it stalled in the garage again. It’s sat ever since. It wouldn’t idle when I tried to set the timing back in November. It’s sat over the winter and now it won’t start. Messed with it this weekend, wasn’t getting spark to #1 (lots of carbon). Filed the points cleaned plug and got spark. Ran for a second until the moment I let up on the clutch (I was in neutral). As of now the fucker won’t start. Another thing I should mention, the original TQ is leaking pretty bad on the front passenger corner dripping over the manifold. Sorry for the long post, it’s all a mess. Any incite from you guys would be much appreciated!!
     
  2. rumblefish360

    rumblefish360 so close yet so far away

    Messages:
    34,091
    Likes Received:
    6012
    Joined:
    Jun 21, 2005
    Location:
    New York, on a Island
    Local Time:
    9:06 AM
    If you have spark and fuel, then it’s spark timing, low fuel or bad plugs.
     
    • Like Like x 1
    • nm9stheham

      nm9stheham Well-Known Member

      Messages:
      10,405
      Likes Received:
      2675
      Joined:
      Dec 20, 2013
      Location:
      Waynesboro, VA
      Local Time:
      9:06 AM
      Can you describe how you are testing spark? If it is to pull a plug, hook up the plug wire, and check for spark across the plug gap in open air, that is in no way a good test.

      What did you set the points gap to?
       
    • 121gigawatts

      121gigawatts Member

      Messages:
      15
      Likes Received:
      0
      Joined:
      Jun 20, 2018
      Location:
      Near Chicago
      Local Time:
      8:06 AM
      My old man is helping me. he made a gap from the plug to a screw driver grounded on the engine block. I turned the key and he said we had spark. We haven’t set the points gap.
       
    • 69FBCuda

      69FBCuda Life in the Fast Lane

      Messages:
      1,302
      Likes Received:
      524
      Joined:
      Aug 28, 2014
      Location:
      Florida
      Local Time:
      9:06 AM
      "he original TQ is leaking pretty bad on the front passenger corner dripping over the manifold."

      First thing you need to do is rebuilt that fire hazard!
       
      • Agree Agree x 5
      • halifaxhops

        halifaxhops It's going to get stupid around here! FABO Gold Member

        Messages:
        49,363
        Likes Received:
        17305
        Joined:
        Jan 20, 2014
        Location:
        CENTRURAL, PA
        Local Time:
        9:06 AM
        Set the gap then check them with a dwell meter to make sure they are right. Any chance you put a new condenser in it before this started happening? The new ones suck.
         
        • Agree Agree x 1
        • 512Stroker

          512Stroker We are all here because we are not all there.

          Messages:
          358
          Likes Received:
          105
          Joined:
          May 30, 2016
          Location:
          Freedom, MO
          Local Time:
          8:06 AM
          How old is the fuel?
          Had one here recent that we could not get to run until we replaced a half a tank of one year old fuel.
          The fuel we get now is junk, if smells the least bit funny is gone bad. You can dump as much snake oil in it as you want it won't help.
          Good luck, let us know how you do.
           
          • Agree Agree x 2
          • Like Like x 1
          • 121gigawatts

            121gigawatts Member

            Messages:
            15
            Likes Received:
            0
            Joined:
            Jun 20, 2018
            Location:
            Near Chicago
            Local Time:
            8:06 AM
            Bel
            Last summer we (me and my dad) took it apart and replaced the gaskets hoping that would fix it. I think I’m gonna get a 670 street avenger.
             
          • 121gigawatts

            121gigawatts Member

            Messages:
            15
            Likes Received:
            0
            Joined:
            Jun 20, 2018
            Location:
            Near Chicago
            Local Time:
            8:06 AM
            It’s got a full tank of year old gas.
             
          • nm9stheham

            nm9stheham Well-Known Member

            Messages:
            10,405
            Likes Received:
            2675
            Joined:
            Dec 20, 2013
            Location:
            Waynesboro, VA
            Local Time:
            9:06 AM
            Ooops... that is bad juju.... siphon some of it out and if it looks like reeeealy yellow dog pee, then you ought to get it all out. It'll smell skunky too. And if it has the typical ethanol in the fuel, then that will absorb water, turn into a gummy substance, and clog you carb big time.

            Modern FI engines can often fire on old gas when older carbed engines with weaker spark systems cannot, so your older Dart is gonna need a regular diet of fresh clean fuel. And try to use non-ethanol gas when you get ready let it set for a while, or at least use a fuel stabilizer additive.

            OK, it ought to be able to jump at least 1/4" with a blue spark in open air. If the gap set up for test in open air is really small, then that does not make a good test. It takes only a few thousand volt spark to jump a small gap in open air but that low voltage spark won't have a prayer of jumping the spark plug gap in a compressed fuel-air mixture. (Normal spark voltage from this type of system exceeds 20,000 volts.)
             
            • Agree Agree x 1
            • TF360

              TF360 Well-Known Member

              Messages:
              1,201
              Likes Received:
              298
              Joined:
              Apr 25, 2014
              Location:
              Florida
              Local Time:
              9:06 AM
              Throw some new plugs in and rotor while your there
               
              • Agree Agree x 1
              • Demonic

                Demonic Well-Known Member

                Messages:
                402
                Likes Received:
                217
                Joined:
                Mar 21, 2015
                Location:
                Maryland
                Local Time:
                9:06 AM
                Check the rotor & spark timing, just in case the chain jumped. Usually they just fall off. :lol:
                 
              • Jadaharabi

                Jadaharabi FABO Gold Member FABO Gold Member

                Messages:
                4,598
                Likes Received:
                4158
                Joined:
                Jan 8, 2016
                Location:
                Peoria, Illinois
                Local Time:
                8:06 AM
                When you and your dad regasketed the carb did it have brass floats in it?
                 
              • xLURKxDOGx

                xLURKxDOGx "An angel fat, at satan's feast"

                Messages:
                2,682
                Likes Received:
                609
                Joined:
                Dec 27, 2013
                Location:
                PHX
                Local Time:
                6:06 AM
                There’s your fix, sounds like a possible flooding issue?

                Jake
                 
              • superchargeddrt

                superchargeddrt FABO Gold Member FABO Gold Member

                Messages:
                2,017
                Likes Received:
                595
                Joined:
                Aug 24, 2009
                Location:
                Pittsburgh, Pa.
                Local Time:
                9:06 AM
                First things first,
                You NEED to fix that fuel leak before something bad happens. I remember warning a guy that was trying to start his car at a convenience store that his carb was leaking around the butterfly shaft and that he shouldn't be trying to start it. I just walked into the store when he came running in saying he needed a fire extinguisher. Hated to tell him "I warned you". Get the leak fixed then check for spark.
                 
                • Agree Agree x 2
                • 121gigawatts

                  121gigawatts Member

                  Messages:
                  15
                  Likes Received:
                  0
                  Joined:
                  Jun 20, 2018
                  Location:
                  Near Chicago
                  Local Time:
                  8:06 AM
                  It did have brass floats but they were in good shape weren’t leaking at all. We definitely double checked the float levels too.
                   
                1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
                  By continuing to use this site, you are consenting to our use of cookies.