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Thread: Need Help!

  1. #1
    Teddy57's Avatar
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    Need Help!

    I really don't know what is going on with my ski. I took it out last night and it only ran 67 on the GPS, smooth water, little wind, 2 bars of fuel. Now I am a bigger guy 225-230, but something must be wrong. It is an '04 RXP with 60 hours. I have a complete Riva Stage 1 kit without the wedge, rotax pipe, riva bov, denso plugs. I took the ski in to have it serviced at 55 hours, had them switch the stock impeller for the 14/19R impeller and ever since then it has seemed to "slip" out of the hole, also replaced the wear ring. It doesn't just go like it did with the stock one. It seems to slip and hesitate for about a few seconds, the RPM's are up but it seems like something is wrong there. When I am up to speed it is only running around 7800-7950 for rpms on smooth water with no wind, knock sensor is updated, etc. Some times it will run 8000 on smooth water, but never see 8100. I don't know if I am getting bad gas sometimes or what but the RPM's seem to be very inconsistent.

    Any help would be appreciated. Thanks


  2. #2
    Quote Originally Posted by Teddy57 View Post
    I really don't know what is going on with my ski. I took it out last night and it only ran 67 on the GPS, smooth water, little wind, 2 bars of fuel. Now I am a bigger guy 225-230, but something must be wrong. It is an '04 RXP with 60 hours. I have a complete Riva Stage 1 kit without the wedge, rotax pipe, riva bov, denso plugs. I took the ski in to have it serviced at 55 hours, had them switch the stock impeller for the 14/19R impeller and ever since then it has seemed to "slip" out of the hole, also replaced the wear ring. It doesn't just go like it did with the stock one. It seems to slip and hesitate for about a few seconds, the RPM's are up but it seems like something is wrong there. When I am up to speed it is only running around 7800-7950 for rpms on smooth water with no wind, knock sensor is updated, etc. Some times it will run 8000 on smooth water, but never see 8100. I don't know if I am getting bad gas sometimes or what but the RPM's seem to be very inconsistent.

    Any help would be appreciated. Thanks
    How hot is it there? Heat fade? The 14/19R needs tweaked!

  3. #3
    Teddy57's Avatar
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    no, it was about 70-75 outside last night. Engine temp was around 74-75.

  4. #4
    Teddy57's Avatar
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    Anyone?

  5. #5
    what impeller nose cone are you running...stock ....solas(green)...I would run it without a nose cone if you are in freshwater...when my stock nose cone split I lost RPM...and with the solas I cavitate outta the hole....none is the best for me

  6. #6
    Teddy57's Avatar
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    Stock cone. Im really worried about the possible slippage, something has to be going on here. It just seem like it spins coming out of the hole??? Someone please help? It didn't seem to do it with the stock prop, but right after I got it back from the dealer it just felt like it wasn't "hooking up" right when I pound the throttle.

  7. #7
    you might want to take 1mm out of the trailing edge

  8. #8
    well with the stock cone...I dunno...I'm new to 4tecs...someone knows better I'm sure

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