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  1. #1
    ULTRA3N's Avatar
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    300X loss of power

    Hey guys,
    First of all Merry Christmas to you all and i wish you all the best for the new year approaching.

    Its a bad time of year for the ski to play up but what has happened is i took it out yesterday and pin the throttle and the power drops down, i keep it pinned and it would power on off on off on off, jumping forward and then slowing down. I rode the ski for an hour hoping it would clear up, and by the end of my ride it wasn't powering on and off as hard but the hole shot would still bog down and not make a smooth run up to the top speed of about 80kmph. The highest rpm's that i saw when keeping it pinned were 6300 it would peak occasionally but not by much. I had 15psi of boost on the gauge and that seemed consistent but would jump up and down a little when the ski was powering on and off at wot.

    So is it safe to assume it could be 3 things? Spark Plugs, Belt Slipping, Exhaust filter failing?

    We pulled all the spark plugs they all seemed good and gave them a clean and put them back in, same thing no change in power.

    It could be the belt so what do you all suggest i do to give it a clean?

    I doubt its the exhaust filter as its only got 40 hours and its the 2013 exhaust filter, but it could be, who knows..

    EDIT: should also mention i took the ski out last week and it ran perfectly.
    Thanks,
    Chad


  2. #2
    Take the time to smile sirbreaksalot's Avatar
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    1st replace the plugs.as a visual check means nothing
    2nd actually remove and check the filter , as average post ride care can and will destroy a filter in as little as 10hrs
    3rd is the belt cover gone ?

  3. #3
    ULTRA3N's Avatar
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    Quote Originally Posted by sirbreaksalot View Post
    1st replace the plugs.as a visual check means nothing
    2nd actually remove and check the filter , as average post ride care can and will destroy a filter in as little as 10hrs
    3rd is the belt cover gone ?
    Yep trying to get the plugs asap but the pmr9b are hard to find, i heard the cr9eix and cr9ek should be alright to use?

    And no the belt cover is still there.

    Thanks

  4. #4
    Take the time to smile sirbreaksalot's Avatar
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    yep any will do for test purpose

    I only run cr9eix ....
    and carry cr9ek for spares ( but u need the caps )

    Waz

  5. #5
    ULTRA3N's Avatar
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    Ok thanks mate ill pop in to supercheap auto tommorow and grab a set of cr9eix's and let you know how that goes.

    Thanks

  6. #6
    Self Confessed Day Dreamer toomanytoys's Avatar
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    Sounds like a slipping belt. Make sure you don't have a split in a water hose somewhere. Check the hoses near the belt and have a very close look at all of them. Ride with the seat off and see if you can see mist from around that area.

  7. #7
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    In my case (with similar symptoms) the battery terminals were loose - check the easy stuff first

  8. #8
    wotxxxsd's Avatar
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    Change the plugs to rule that out and if it still does it then keep the old set for spares.
    Check the exhaust filter..
    I've seen people that had to change them every 35-50 hrs..

  9. #9
    Vman's Avatar
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    Ummm... I would think about checking the intercooler along with all that other stuff.

  10. #10
    Self Confessed Day Dreamer toomanytoys's Avatar
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    Even a pretty clogged up intercooler only drops a couple of hundred rpm at the most and then only on a hot day. It's consistently lower too, it doesn't run bad, then good.

    I'd be checking for water spraying on the belt, then a dislodged Exhaust Filter, and finally replacing the plugs.

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