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  1. #1

    Join Date
    Aug 2011
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    Replaced Fuel Filter Now It Wont Start 20$ through paypal leading to fix

    I have a 1998 GP 760 and the fuel filter had a bunch of debris in it, so i replaced it and now I can't get the ski to start.

    It was running fine before I replaced the fuel filter.

    So I cleaned all the fuel lines, took off the carb and cleaned out the filter inside the carb/fuel pump expecting it to be full of debris that might have fell out of the fuel filter when I was replacing it, but it was almost perfectly clean. Then I heard it might not be getting fuel, so I pulled off the return line (line from carb to gas tank) and stuck it in a container and tried cranking it; the container started filling up with gas so I know it has gas in lines.

    It will crank up on starter fluid, but then after you stop spraying it will die.

    Any suggestions as to what to try next?

    Here are some pictures showing how far I took apart fuel pump and filling the container with gas with return line (carb to gas tank) when cranking.
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  2. #2

    Join Date
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    Do not use starter fluid.
    Take out plugs, drop a teaspoon of gas into each cylinder, re-install plugs, then start.
    It should keep running after the third attempt, at most.

  3. #3
    improvised tmg97gp's Avatar
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    Looks like there are a couple of parts missing in your second pic.

  4. #4
    The crap could have plugged up the internal carb screen filters after you placed the fuel filter.

    How did you - "cleaned all the fuel lines"?

  5. #5
    slothman's Avatar
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    Make sure all the fuel lines are connected in the right spot. You may have switched a line accidentally.

  6. #6

    Join Date
    Aug 2011
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    @toyterrific just tried your method of putting gas into teaspoon of gas into cylinders did this about 6 to 7 times got a couple loud POPS and a just a few real short running times (less than 2 seconds), but couldn't get it running using this method.

    @tmg97gp Yea I was cleaning it out the parts are all there

    @Jay Yea I cleaned the internal carb screen filters, there was wasnt really anything on them. To clean the fuel lines I just sprayed carb cleaner through them.

    @slothman triple checked all fuel lines are in the right spot


    Something that I also did was test the CDI system or the lcd display by using the procedure in the service manual shown in attached pics. I also reset the code to something other than the manufacturer's setting of AAAA shown in attached pics.. I also put a ton of grease in the greasing points shown in picture, probably way to much grease I'm not sure if this would cause problems or not. Something I didn't do was check the main and pilot jet and the low and high end speed screws.

    Any other suggestions? No success yet.
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  7. #7
    Yamaha artisan Cutlass's Avatar
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    Well if you filled the stator housing up with grease...that might give you problems. Not really likely, but possible. Sounds like you do have spark though since it runs a little bit on starter fluid and gas down the cylinders.

  8. #8
    Not sure if the filter could be put in the wrong direction, but it may only flow one way

  9. #9
    slothman's Avatar
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    Quote Originally Posted by ctct2118 View Post
    Not sure if the filter could be put in the wrong direction, but it may only flow one way
    THIS

  10. #10

    Join Date
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    Almost there

    Double checked the filter positioning and flow direction its placement is correct.

    I ended up making a spray bottle with premix and if I spray that in it while cranking it will start and run. While it's running if I keep spraying the premix into the carbs for about 5 secs then eventually I can stop spraying and it will keep running and runs perfectly after that. It's like it takes time for the fuel to "catch" while you are running it off the premix in spray bottle.

    Anymore suggestions? We're getting close men keep the replies coming!

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