SBT Jetski Engines, Parts & Accessories

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  1. #1
    twkenny is offline On the 2nd tank
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    Default GTX RFI...RAVE valve problems???

    I posted this last night, but it does not appear to be be displaying properly...sorry for the double post.

    I cleaned the 2 RAVE valves on my 98 RFI because I was getting a very bad power surge at 4500 rpm. I cleaned the black air lines that go to them too, but it still has the surge. I disconnected the line, and it runs very smoothly, although a bit down on initial acceleration, but that 4500 rpm surge is gone.
    Any ideas?
    Thanks!

  2. #2
    Technical Support's Avatar
    Technical Support is offline Administrator
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    Default Re: GTX RFI...RAVE valve problems???

    That 'surge' is your RAVE vales opening - it's normal - reattatch your lines!
    SBT Tech Support is here to help with your problems.
    We try to answer each question quickly and accurately.
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  3. #3
    twkenny is offline On the 2nd tank
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    Default Re: GTX RFI...RAVE valve problems???

    It's really bad...I've had it since it was new, and this is not right. I know there is a bit of a surge around that RPM, but this is terrible...

  4. #4
    Technical Support's Avatar
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    Default Re: GTX RFI...RAVE valve problems???

    Try new plugs
    SBT Tech Support is here to help with your problems.
    We try to answer each question quickly and accurately.
    Please do not use Private Messaging for Tech Support, use the forums.

  5. #5
    twkenny is offline On the 2nd tank
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    Default Re: GTX RFI...RAVE valve problems???

    I appreciate the help and comments. I started with new plugs, then did the valves. I still have the bad surge at 4500. When I say bad, I mean it goes from 4500 to 65-6800 with a VERY slight throttle movement, then drops back to just below 4500.

    Do I need to do anything to the RAVE valve on the exhast in the back?

  6. #6
    Bill O'Neal2's Avatar
    Bill O'Neal2 is offline PWC Professional
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    Default Re: GTX RFI...RAVE valve problems???

    Yes. Test the water regulator valve ( it's not a rave valve) for leaks and set the red cap all the way in, then back the red cap out about 1/2 turn.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  7. #7
    twkenny is offline On the 2nd tank
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    Default Re: GTX RFI...RAVE valve problems???

    Thanks Bill. I'll try it.

    Will running it with the line off hurt anything until I get this fixed? Sure was nice to ski behind as it was so smooth...remionded me of my 85 hp gts!

  8. #8
    Bill O'Neal2's Avatar
    Bill O'Neal2 is offline PWC Professional
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    Default Re: GTX RFI...RAVE valve problems???

    You cannot use the ski with the water regulator valve hose disconnected as it provides the ehaust system with water to cool the hoses.

    You can remove the line from the pipe long enough to see if the water flow is strong at 2500 rpm and that the water stream diminishes to much less flow at higher rpms. That would tell you that the water regulator valve is working properly. If water dribbles from the cap on the regulator valve, that would be a sign that the regulator valve may need replacing. All of this must be done with the pump in the lake, as it will not work using a garden hose hooked to the flush fitting.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  9. #9
    twkenny is offline On the 2nd tank
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    Default Re: GTX RFI...RAVE valve problems???

    I'm not sure I'm following what you are saying. The line I was talking about was the small, black line that attaches to the housing via that small fitting on each of the valves. When I disconnected that, it ran much smoother, but with less power.
    You are talking about the valve in the back near the battery, right? You're saying there is a line coming off that that pumps water?

    Thanks, sorry to be a pian.

  10. #10
    1fastski.com is offline Industry Pro
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    Default Re: GTX RFI...RAVE valve problems???

    check for cracks in your hoses from the bottom of the motor up to the rave solinoid . you also need to check the rave bodys for worn Orings and seals .
    PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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