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2004 800X Fast idle..

Discuss 2004 800X Fast idle.. in the SKI-DOO CHAT forums; Have a really high idle on my 04 800. if I choke it, it'll idle great, and the Mag side ...


  1. #1
    Member PS94's Avatar
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    2004 800X Fast idle..

    Have a really high idle on my 04 800. if I choke it, it'll idle great, and the Mag side is running 100* hotter at anything above idle. I'm thinking Vac Leak... are there any spots to start looking? I'm doing reeds soon, and I heard the carb boots are usually suspect...where else to look?
    Toys: 2008 RZR-800, 2005 GSX-R600, 2004 rev Summit X 800 159", 2013 Summit XM X 163", 1998 Sea Ray BR180, 450hp Ford Ranger, 2004 SL55AMG
    Tow Pigs: 2012 Blue Flame SVT Raptor, 1993 Fleetwood Southwind



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    Member straight-a-way's Avatar
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    Re: 2004 800X Fast idle..

    are the carbs clean?

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    Member Braaap.'s Avatar
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    Re: 2004 800X Fast idle..

    Check your carb boots. Possible cracking/deteriorated boots. And I will bet its on your lean side

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    Re: 2004 800X Fast idle..

    Also a somewhat pouted pilot jet will lean it at idle
    long live the rev ...08-09 xp's are like riding a buffalo
    sleds are a 2014 xmx 163 , 2010 summit x 163 copper black mod

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    Member PS94's Avatar
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    Re: 2004 800X Fast idle..

    Well the carb boots were scary deteriorated. They were original I think. Put the Boysens on, idles @2200-2500 now...
    Cleaned Carbs, weren't scummy or dirty
    Still is 100* higher on RH (or 100 degrees lower on left!)
    Starts fine, runs great, pulls hard...What temp should I be getting worried at?
    Toys: 2008 RZR-800, 2005 GSX-R600, 2004 rev Summit X 800 159", 2013 Summit XM X 163", 1998 Sea Ray BR180, 450hp Ford Ranger, 2004 SL55AMG
    Tow Pigs: 2012 Blue Flame SVT Raptor, 1993 Fleetwood Southwind

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    Re: 2004 800X Fast idle..

    My 07 800R did the same thing when sitting the idle creep was getting so high the clutch was almost engaging and by flipping the choke would drop it down but it would creep back up but the thing would run fine all day. Took it Martin thinking was bad crank seal PSI good both side did a leak down test and failed horribly out came the engine, piston a walls scored all to hell was probably minutes/KM's from a blow up. Turns out a reed petal broke off and went through the engine.
    I learned the choke flipping thing from Freakshow his 04 800 was doing the same with the idle creep pulled hard all day just couldn't stop had to shut it off. Then 8'oclock at night 40KM back to the cabin in the sask bush she went BOOM good thing she was flat for towing
    Murray


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    Re: 2004 800X Fast idle..

    check your pilots.... I had to go from the stock 17.5's to 20's...... after I rebuilt the engine and the same things you have all described....
    Lets ride!!!.....

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    Re: 2004 800X Fast idle..

    How many turns are the pilots screws out???
    long live the rev ...08-09 xp's are like riding a buffalo
    sleds are a 2014 xmx 163 , 2010 summit x 163 copper black mod



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    Re: 2004 800X Fast idle..

    Quote Originally Posted by tex78 View Post
    How many turns are the pilots screws out???
    Yes, you can check the fuel screws. But, usually if at the stock setting, you will require the bigger pilots. Not enough range on them to correct the high idle issue. This was a very well known topic on dootalk.
    Lets ride!!!.....

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    Member Rick Byers's Avatar
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    Re: 2004 800X Fast idle..

    My 2005 800 Summitt X had the same problem it was the lean side of the carb boots they were delaminating. The rubber coating was pealing away from the plastic body causing air leaks to the carbs. Replaced for 185.00 Cdn now runs great.

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