Speedmaster Carbon Buildup

Discussion in 'America, Speedmaster & Rocket' started by Jacknzone, May 24, 2020.

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  1. Jacknzone

    Jacknzone Well-Known Member

    Mar 5, 2020
    120
    83
    Christchurch NZ
    #1 Jacknzone, May 24, 2020
    Hi is it normal to have this much carbon buildup coming out the exhausts system on a speedmaster with only 3000km on the clock , my last Triumph Tiger had a nice grey pipe .
    The buildup of carbon in the photo is just after a 220km ride out of town cruising just over 100 kph

    IMG_20200523_095202.jpg
     
  2. brown mouse

    brown mouse Elite Member

    Sep 15, 2018
    2,288
    943
    East Midlands, UK
    #2 brown mouse, May 24, 2020
    I get the same too. First I noticed it on the paddock stand bobbins but then realised it was covering the black painted exhaust end as well. I spotted it not long after buying the bike new and was nervous of a problem but I've now done 16,000 miles and engine still runs fine. My oil consumption seems to be about 100ml per 1000 miles, I don't know if that's 'normal', but my Google searches seamed to indicate it's not enough to worry about.
     
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  3. capt

    capt Elite Member

    May 8, 2016
    3,050
    750
    western Australia
    #3 capt, May 24, 2020
    Unfortunately it is the new "Norm" as our unleaded fuels are CRAP !! This never happened with Leaded petrol unless there was a serious issue with your motor ! It had to be seriously very rich indeed !

    Unleaded fuel burns very poorly in comparison !
     
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  4. Wire-Wheels

    Wire-Wheels Elite Member

    Apr 26, 2019
    2,497
    800
    California - USA
    #4 Wire-Wheels, May 24, 2020
    The best cure for carbon buildup is an open throttle...J.D.
     
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  5. Jacknzone

    Jacknzone Well-Known Member

    Mar 5, 2020
    120
    83
    Christchurch NZ
    #5 Jacknzone, May 25, 2020
    Thanks brown mouse you put my worries to rest ,I will just keep enjoying this great bike cheers
     
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  6. Jacknzone

    Jacknzone Well-Known Member

    Mar 5, 2020
    120
    83
    Christchurch NZ
    #6 Jacknzone, May 25, 2020
    Thanks capt I use 95 octane and now I have started using 100 octane to see if it makes a difference in carbon buildup and performance
     
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  7. Jacknzone

    Jacknzone Well-Known Member

    Mar 5, 2020
    120
    83
    Christchurch NZ
    #7 Jacknzone, May 25, 2020
    Thanks Wire-Wheels ,Funny you say that ! yesterday I went for a ride with some friends 220km round trip and the throttle was open the rev counter was reading 4200 rpm in 6 gear
     
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