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  • #1

    Hard Start?

    For some reason my 3500 is hard to start sometimes. Many times I will turn the key and it will crank 2 or 3 times and start just fine (idle just fine). However sometimes I will crank it 2 or 3 times, it will start, then the RPM's will fall low and it will just die.

    When this happens sometimes I can catch it before it totally dies, just a tiny bit of gas when I first start it and it will idle fine.

    Any ideas? Just kind of annoying, having to gas the car to get it to start... like I have a carb or something.
    SpudFiles
    Blast vegetables and whatever else you can think of!
    Theopia
    Enjoy life online.

    1996 3500GP Coupe, "Bright White".
    3500 swap, 60degreeV6 1393 Cam, Ported Intakes, Comp Cams Valve Springs, 65mm TB, Custom Pushrods, S&S Headers, 97 PCM with DHP Powrtuner, 2.5" back to dual Hooker Aerochambers, SS Brake Lines, Addco swaybar, KYB's, Intrax Springs, STB's, etc!
    Tags: None
  • #2
    Perhaps the initial fuel squirt isn't enough?? Are you letting fuel pressure build up in the rails a few seconds before starting?
    sigpic New 2010 project (click image)
    1994 3100 BERETTA. 200,000+ miles
     16.0 1/4 mile when stock. Now ???
    Original L82 Longblock     with LA1, LX9, LX5 parts
    Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.

    Comment

    • #3
      Are you letting fuel pressure build up in the rails a few seconds before starting?
      No I am not, I'll give that a shot... see if it changes anything.
      SpudFiles
      Blast vegetables and whatever else you can think of!
      Theopia
      Enjoy life online.

      1996 3500GP Coupe, "Bright White".
      3500 swap, 60degreeV6 1393 Cam, Ported Intakes, Comp Cams Valve Springs, 65mm TB, Custom Pushrods, S&S Headers, 97 PCM with DHP Powrtuner, 2.5" back to dual Hooker Aerochambers, SS Brake Lines, Addco swaybar, KYB's, Intrax Springs, STB's, etc!

      Comment

      • #4
        on my 3100, that happened to me 2 times the other day, and now its fine.

        Comment

        • #5
          Well I have been letting it sit for a few moments after turning the key, and it doesn't do it!

          Why doesn't pressure build fast enough?
          SpudFiles
          Blast vegetables and whatever else you can think of!
          Theopia
          Enjoy life online.

          1996 3500GP Coupe, "Bright White".
          3500 swap, 60degreeV6 1393 Cam, Ported Intakes, Comp Cams Valve Springs, 65mm TB, Custom Pushrods, S&S Headers, 97 PCM with DHP Powrtuner, 2.5" back to dual Hooker Aerochambers, SS Brake Lines, Addco swaybar, KYB's, Intrax Springs, STB's, etc!

          Comment

          • #6
            It may be loosing pressure after sitting and the fuel drains back down the line a bit... IIRC my car even after sitting for a long time will have some pressure in the rails. Maybe yours is draining back down or an injector is leaking sitting there getting air in the rail???

            Since you have a cam it may be a bit harder to start that most cars and its just more sensitive to it... I know mine if I don't let it prime the rails a sec or two sometimes it takes more cranks to fire off. If they are primed just a bump of the starter and off it goes.
            sigpic New 2010 project (click image)
            1994 3100 BERETTA. 200,000+ miles
             16.0 1/4 mile when stock. Now ???
            Original L82 Longblock             with LA1, LX9, LX5 parts
            Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.

            Comment

            • #7
              Well nevermind fuel isn't it, it just happened again when leaving to go back to work.
              SpudFiles
              Blast vegetables and whatever else you can think of!
              Theopia
              Enjoy life online.

              1996 3500GP Coupe, "Bright White".
              3500 swap, 60degreeV6 1393 Cam, Ported Intakes, Comp Cams Valve Springs, 65mm TB, Custom Pushrods, S&S Headers, 97 PCM with DHP Powrtuner, 2.5" back to dual Hooker Aerochambers, SS Brake Lines, Addco swaybar, KYB's, Intrax Springs, STB's, etc!

              Comment

              • #8
                LOL damn oh well.
                sigpic New 2010 project (click image)
                1994 3100 BERETTA. 200,000+ miles
                 16.0 1/4 mile when stock. Now ???
                Original L82 Longblock                 with LA1, LX9, LX5 parts
                Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.

                Comment

                • #9
                  my issue is intermittent also. sometimes it just perks right on, other times it sounds a bit tired.... .

                  Comment

                  • #10
                    Check your fuel pressure regulator. This happened to my 3400 quite often until I tracked down the FPR being bad.

                    Comment

                    • #11
                      where is the FPR?

                      Comment

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