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  1. #1

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    97 SPX Carb prob with pics

    Bought 97 spx, took it out, ran great other than bad battery. Decided to change the fuel lines (grey ones). Took back to lake the next week now it bogged at full throttle only on choppy water. Basically starving for fuel. Took home, found alot of fuel in the bottom of the hull (about 2 cups maybe 3 there was a little water mixed but prob from normal use).
    Checked all my lines couldnt find any leaks so maybe leaked when there was presure? So i rechecked the fuel lines to see if i put them on too hard or not. Seemed fine, took the carbs apart at the diaphram one has what seems like rust in it, take a look, and give input plz. Thanks. Im fairly new to ski's but can learn fast. Im assuming while i have them apart i should get a kit, but what do you think about rear carb. with the rust on the screws?

    Front carb with pump: CLICK for bigger pic


    Rear carb: CLICK for bigger pic



    Rear / Front - from left to right


    Diaphrams/gaskets


    also i notice that when i take the diaphram out and the gaskets, they are now bigger or swelled up. is that normal.


  2. #2

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    either way i ordered a kit for both carbs, ill work on it thru the week. i have another ski that runs great we can get by.

  3. #3
    crxski's Avatar
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    Question

    Ya I was wondering about this too? is it normal for them to swell up????


  4. #4

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    i think its the gas that swells them up, then when they dry they go back down. my best guess, its prob the ethynol in the gas that swells the rubber up.

    Quote Originally Posted by crxski View Post
    Ya I was wondering about this too? is it normal for them to swell up????


  5. #5
    96XPSS's Avatar
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    The diaphrams could be swollen to the point that they don't seal in the groove.

    I'm sorry, but you should be able to find a fuel leak in your hull. Run it on the hose with the seat off and you will see it dripping somewhere.

    PS- You are lucky you didn't blow yourself sky-high.

  6. #6
    SURFnTURF's Avatar
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    The diaphram and the gaskets swell because they are cheap aftermarket ones usually wsm brand. Only use Genuine Mikuni parts, some people try to save a few bucks on gaskets etc but can cause big $$$ damage later.

  7. #7

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    my origional question was about the rear carb tho
    Quote Originally Posted by Tango911 View Post
    what do you think about rear carb. with the rust on the screws? The screw for the reed is rusty as well and stripped :/

    Front carb with pump: CLICK for bigger pic


    Rear carb: CLICK for bigger pic



    Rear / Front - from left to right


    Diaphrams/gaskets


    also i notice that when i take the diaphram out and the gaskets, they are now bigger or swelled up. is that normal.

  8. #8
    It's fine regarding the performance of the carb. It does means that your engine ingested water through that carb which means you could have problems with the top and bottom end if it wasn't taken care of properly and promptly.

  9. #9

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    thanks!

  10. #10
    96XPSS's Avatar
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    It just means there was water in the fuel at one time. If the engine would even run, whatever water that was in the gas was absolutely harmless to your engine.

    As there will always be fuel in the carb from now on (right?), the rust will never get worse or make any difference.

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