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  5. 2007 CRF 450 - Fouling Plugs! - Page 2
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2007 CRF 450 - Fouling Plugs!
  • redrooster65
    Posts:576
    Joined:Tue Sep 05, 2006 4:37 pm

    by redrooster65 » Fri Mar 16, 2007 5:59 pm

    Stuck float?
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    JAWS
    Posts:4449
    Joined:Fri Jun 16, 2006 6:59 am

    by JAWS » Fri Mar 16, 2007 6:30 pm

    Could have been along with a lot of other guesses, except for that run on VP U4 gas which was way lean. Loose jets (my guess) stuck float, bad spark.. all of it should effect things across the board, but doesn't. The only thing that has not been too rich was the oxygenated VP U4.. This is going to be interesting when we find out what it is!

    Joe
    Image
    '05 CRF450X,McClain suspension, Cycra Probends, Pastrana FMX Pro Tapers,BRP Sub mount & Scotts stabilizer.See carb sticky for more
  • mxmike13
    Posts:2
    Joined:Wed Mar 30, 2005 2:10 pm

    by mxmike13 » Fri May 11, 2007 10:11 am

    Check the suppressor cap, has been a know issue with older models, the resistor breaks down when it gets hot and fouls plugs.
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    mikey526
    Posts:1176
    Joined:Sun Apr 01, 2007 5:29 pm

    by mikey526 » Tue May 22, 2007 5:54 pm

    Have you mixed the gas at all? If your bike is running lean with race gas and rich with pump gas, I'm not sure if this would work, but if you mix them wouldn't you get closer to perfect?
  • CAMERON
    Posts:15
    Joined:Sun Jun 10, 2007 8:11 pm

    by CAMERON » Sun Jun 10, 2007 8:26 pm

    YOU ARE OVER REVVING THE BIKE, SPECIFICALLY ON FAST PRACTICE TRACKS. TO GET RID OF IT YOU NEED TO UN-PLUG UP YOUR OIL BLOWBY(OVERFLOW). WHICH OIL USUALLY GETS THERE FROM OVER REVS.
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