Is it possible???????

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  • ctrain22
    • Jun 2009
    • 5


    #1

    Is it possible???????

    Is it possible to put in and run a regular coil/distributor set up and bypass the electronic ignition coil on a 1999 Pro Air Nautique gt-40? We have been having troubles starting this thing when she is warm afetr runs. It takes usually an hour ot coll down befire she starts again. Runs like a rapped ape when she is running and starts everytime cold. Just when warm it won't fire. We think we have it narrowed down to some kind of ignition trouble with erractic spark. We changed the compouter, coil, wires, ??? I was wondering if we just ran a hot wire to a standard coil and distributor setup, if it would run and would it effect the fuel injection? We are grasping at straws to get this thing to run before we take a sledge to it. Real hard to enjoy a weekend out on the lake when you can't get it back. I also have a 79 Nautiques that NEVER lets me down.
    Tags: None
  • Nautiquehunter
    1,000 Post Club Member
    • Jun 2008
    • 2080

    • Flowery Branch GA Lake Lanier

    • 2008 210 SANTE 67 Correct Craft Mustang
    #2
    RE: Is it possible???????

    I dont know this system. But usually the computer gets a tach signal from the ignition system.

    Comment

    • DanielC
      1,000 Post Club Member
      • Nov 2005
      • 2669

      • West Linn OR

      • 1997 Ski Nautique
      #3
      RE: Is it possible???????

      Have you downloaded the GT-40 service manual from this site?
      It has a good trouble shooting section.

      Comment

      • 2gofaster
        Senior Member of PLANETNAUTIQUE
        • May 2008
        • 671

        • Stevenson Lake-Conroe, Texas

        #4
        RE: Is it possible???????

        No, that will not work. The ecm needs to see the PIP signal from the TFI module on that distributor. Have you changed the TFI module? Have you checked the timing?
        Shane Hill
        2014 Team 200OB
        67 '13 Prophecy

        Comment

        • Miljack
          1,000 Post Club Member
          • Dec 2004
          • 1616

          • Charlotte, NC

          • '08 230 TE ZR6
          #5
          My Python powered Pro air can be difficult to start when hot. On mine, I open the throttle and that seems to help it clear to start. PCM was very conservative on their fuel curves, and they also tend to have a pretty good start shot of fuel.
          2008 230 TE-ZR6
          1999 Pro Air Python-sold and moved away :-(

          Comment

          • ctrain22
            • Jun 2009
            • 5


            #6
            Haven't checked the ignition module. Someone else just told me about it. Have they been known to cause these start problems when warm? How do you test them? We have checked the timing. That's how we think we found it was ignition problem. When it wouldn't start, the timing light wouldn't flash. And sometimes flash erratically. When it did fire up, the light would flash correctly. Do you think the TFI (I assume that's the ignition module) could be the problem????

            Comment

            • horkn
              • Aug 2007
              • 270

              • WI

              • 78 CC Martinique, rebuilt floor and custom interior.
              #7
              The TFI could very well be the issue.

              It resulted in hot start issues on ford cars, and I know I have seen a few guys mention this on their efi PCM fords too.

              Comment

              • ctrain22
                • Jun 2009
                • 5


                #8
                Where do you get the module? What suppliers carry them?

                Comment

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