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Thread: no idea...97 XC

  1. #1

    no idea...97 XC

    my triple is very boggy and seems to be running on two cylinders (if your sitting on the seat) the right side plug is wet. heres what worries me:

    sled appears to be occasionally having spark. is that a bad CDI box? or any other ideas on what might be going on?

    also its not near as torquey as my cousins '94 XLT, they both have the XLT motors in them. the only difference is that he is running iridium plugs, any ideas? or could it be related to the spark problem?

    any help is greatly appreciated.

    thanks

  2. #2
    Senior Member
    Join Date
    Jan 2008
    Posts
    140
    My neighbor has a Polaris triple with the same problem. He's an accomplished mechanic and has tried everything he knows to do to it. His is the center cylinder that sometimes fires. He thinks it is the CDI box on his sled too.

    Sorry I don't know the year or model. IF it was a Ski doo I'd know!

  3. #3
    check to see if your chock is seating all the way off , I have a 97 xlt 600 that was fouling the plug on one cly. ended up being the chock.

  4. #4
    Senior Member
    Join Date
    Aug 2008
    Posts
    136

    Bogging XLT

    First of all I am not totally familiar with this set-up on your sled ,but if there are seperate coils for each cylinder you could swap the coils around and see if you have a coil cutting out. They can do this when they get hot or cold !
    I don't mean just switch the coil wires. You have to dismount each coil and change places with it. If the fouled plug stays in the same cylinder the coils are fine. If it follows the coil to the other cylinder the coil is the problem. If it does stay with the same cylinder it is possiable the box is bad. In that case you will have to check the input feed wire to the coil for power and grounds. I do not how able you are at checking this on your own but it takes a bit of know how.

    I am very willing to help any of you guys out there, as long as you can get your sled to me. I live in Waukesha Wis. Give me a holler and maybe I can help you !!!

  5. #5
    Those systems are "waste fire ignitions" meaning they all fire at the same time (or, each plug fires three times for every single revolution of the engine). Also those systems are hooked up like some Christmas lights on a string, if one coil fails you lose a link and none of them will work. If any one of the cylinders on your engine fires your CDI, stator, all three external coils and trigger coil are all working properly.

    It still could be a plug, plug wire, plugwire end cap, bad piston and/or cylinder or maybe a flooding cylinder.

  6. #6
    Senior Member
    Join Date
    Jan 2003
    Posts
    198
    Not sure how those XLT engines are, but the Ultra 680 Tripples have a grounding bar that connects all three coils together. I had a buddy who's grounding bar cracked, and would intermitently fire, until we put a bandaid on it. I took a piece of heave guage copper wire and connected all three together. We were on the trail when this happened, and just happened to see it arcing across the broken grounding bar once in a while. Finished out the day running strong! I honestly don't think he ever replaced that bandaid either.

    I'd check there first, it sounded just like what you describe.

  7. #7
    Junior Member
    Join Date
    Jan 2005
    Posts
    26
    Had a very similar situation with my brothers 700 rmk. Once it warmed up and he tried to hammer down it just bogged out. Tried everything on the trail and couldnt figure it out.

    Once in the garage and we started taking it apart we found that the choke was sticking on. The one cable wasnt releasing and was causing the cylinder to flood at higher speeds. The choke tube ended up being seized right in where it connects to the carb.

    Just a thought to back up henkdawg.

  8. #8

    Exclamation trippple

    thats why you dont ride triple anything exspesialy sleds. im a polaris guy but no matter who the maker is they just seem to always have problems.

    2005 xcsp 500
    polarisracingboy

  9. #9
    Senior Member
    Join Date
    Feb 2002
    Posts
    471
    The Fugi tripples were an awesome engine for Polaris. I never had a problem with my '96 Ultra 680. It was faster than most 800 twins of the early 2000's model sleds, and still is in some respects. I got great mileage our of it and it always started on the first pull. Great suspension and ran the trails like it was on rails. My Edge suspension can't hold a candle to the high speed cornering of what that monster dished out.

  10. #10
    well turns out i had a bad diagnostic...sort of.

    cause: the throttle cable came out of the carb on the far right side, so that obviously = no/very little gas.

    still don't know what's going on withthe ignition, but its running much better now...it makes a difference when your carb is doing its job.

    now heres my next question: my cousins '94 XLT has a lot more low-end torque/less bog than mine...the only difference is the iridium plugs he has. could this be it? or is it more likely a carb tuning/sync problem?

    thanks guys!

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