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  1. #1
    Cashito's Avatar
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    RXP-X: Bogging Down....

    Took the RXPX for a quick ride after 2 weeks of non-use. Warmed it up at about 4k rpm and noticed it seemed weak... maybe a bit of stuttering. When I floored it, it rose to about 5500rpm and seemed like the power was on/off, on/off. Eventually, it got up to 8080-8100rpm and 70mph (speedo).

    Even so, when i would slow to idle and the full throttle, it would stutter and seem to struggle to rise to 8100rpm.

    Anyone have some things I can try to check? Thank you!


  2. #2
    GOT BOOST? Dockside's Avatar
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    first thing imo id do is pull the itake hose off and see if the sc impeller will spin (do this when the ski is OFF), if it does it failed. drop in rmp is almost always a sc failure.

  3. #3
    Moderator Snoman's Avatar
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    Try changing the spark plugs..

  4. #4
    home of the dislexic fingers breon's Avatar
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    Quote Originally Posted by Dockside View Post
    first thing imo id do is pull the itake hose off and see if the sc impeller will spin (do this when the ski is OFF), if it does it failed. drop in rmp is almost always a sc failure.
    +1
    and plugs ..take a q tip and clean the inside of the coil packs with wd 40

    i had a tps sensor go bad once similar...sympoms

  5. #5
    Cashito's Avatar
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    Pulled the plugs, they were changed a month ago, all looked perfect, no fouling. Where are the coil packs?

  6. #6
    R88ory RXP's Avatar
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    Quote Originally Posted by Cashito View Post
    Pulled the plugs, they were changed a month ago, all looked perfect, no fouling. Where are the coil packs?
    Sounds just like when my SC clutch went in my 04 rxp.

    The washers just started to slip as there was too much wear on the gear and not enough tension in the spring washers, this created the same syptoms you speak of.

    The coil packs push down on top the spark plugs.

    Pull the plastic cover off the top of the engine and under there you will see three black circular things that push down into the head and are plugged into the loom. These are the coil packs.

    I would seriosly get to the front of the supercharger take off the intake hose and see if you can spin the SC wheel by hand, I bet that this is your problem. R88

  7. #7
    Cashito's Avatar
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    Thumbs up

    Update: After pulling the plugs, putting them back in, checking all the coils, cleaning them and reinstalling, the machine runs great!

    I'm convinced the issue was corrosion / rust on the coil > spark plug connection.

    Thank you for your help, you guys rock!

  8. #8
    GOT BOOST? Dockside's Avatar
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    Quote Originally Posted by Cashito View Post
    Update: After pulling the plugs, putting them back in, checking all the coils, cleaning them and reinstalling, the machine runs great!

    I'm convinced the issue was corrosion / rust on the coil > spark plug connection.

    Thank you for your help, you guys rock!
    glad to hear you got it fixed with no major issues

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