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  1. #1

    Hard time starting a 2 stroke help

    Ive got a gp760 thats been sitting for 5 months or so. Cranks over but will not start. When I spray some starting fluid in the intake it will start up and run. I can turn it off and fire it right up. After sitting for couple hours, if i try to start it, it does the same thing- cranks but doesnt fire up. Is is the bad gas?


  2. #2
    Just relax and enjoy the ride. XLT Chad's Avatar
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    Be very careful with using starting fluid on 2-strokes. Not a good idea.

    As far as the starting, check your plugs and replace if needed. Put some fresh gas in too. The ski may have been sitting for 5 months, but how long has the gas been in it.

    If your still having issues, then rebuilding the carbs could be in order.

    Good luck.

  3. #3
    64physhy's Avatar
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    Check the plugs first. If the plugs are good, you'll probably need to clean the carbs. Just spraying carb cleaner into the carb is NOT cleaning them, you need to take them apart and get the crap out of the bowls, jets, etc. In my experience, it's usually like a coat of varnish and peels off easily after you let it soak for a while.

  4. #4

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    Check your tank pressure...make sure your one way valve is holding pressure...if its weak can cause issues with fuel delivery.

  5. #5
    Here is what blows my mind. I looked at the plugs and I am getting spark. I purchased two brand new plugs (exact same ones) and when I test for spark, I get nothing. Very confused. Old ones still have spark

  6. #6
    Polaris John's Avatar
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    Use premix 2 stroke oil and gas in a squirt bottle do not use starting fluid. You could damage the motor with no oil. The new spark plugs could have been dropped on the floor and might have a crack in them. Clean the fuel system before running the motor, 2 strokes need a clean fuel system to run.

  7. #7
    Maybe the gap was incorrect on the plug? Did some research and it says its needs to be .0028

  8. #8
    dockwalker's Avatar
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    Quote Originally Posted by Marineking View Post
    Check your tank pressure...make sure your one way valve is holding pressure...if its weak can cause issues with fuel delivery.
    +1 on the fuel pressure.Have a 98GP1200 and it will leak back to tank if you don't turn off the fuel selector switch.

  9. #9
    Myself's Avatar
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    Quote Originally Posted by matsuka.vitaliy View Post
    Here is what blows my mind. I looked at the plugs and I am getting spark. I purchased two brand new plugs (exact same ones) and when I test for spark, I get nothing. Very confused. Old ones still have spark
    Must be NGK plugs. Lots of them come shorted to ground right out of the box. I've completely lost faith in the NGK brand in the last 18months. If one plug grounds out it will ground the whole ignition. Use an ohm meter and measure from plug hex to plug wire connecting tip. They should only read open circuit. If you get any ohms reading at all it's shorted.

  10. #10

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    Quote Originally Posted by matsuka.vitaliy View Post
    Maybe the gap was incorrect on the plug? Did some research and it says its needs to be .0028
    0.028 (28 thousands) is probably what was meant.

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