Question about 2003 Triumph Speedmaster

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My bike is a 2006 speedmaster and it has in the last week gone from running good to sounding like its running on one cylinder i have strong sound and exhaust out of right side pipe and much weaker out of left and the left plug is dark and fouls like its not sparking all the time and burning the gas going in ichecked the coils and they seem to be ok i switched them and it still happens on same side i rejetted this bike last summer and it has run strong until the last 2 times does it sound like the igniter or a carb problem. hope to hear from u soon! thanks

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Did you consider that when the bike was rejetted , maybe the jets were not put in tight enough ( you do have to be careful not to put them in too tight) and there is a possibility that one or more of the jets have come loose . They could be sitting in the bottom of carburetor bowls causing an overly rich condition on two or more cylinders.I have repaired motorcycles where the jets have come loose and fallen out . It is worth a check.

Posted on Nov 08, 2010

  • David Belcher
    David Belcher Nov 08, 2010

    I meant to say "overly rich in ONE or more carburetors".

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