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  1. SRosso

    Intermittent spark from 2k to 3k RPM

    Hello I have a 1980 XS650 SG the problem I am having is the bike will idle fine but once you give it throttle the bike Boggs but once the bike is over 3000 RPM it runs fine. Today I bought an inline spark tester and it shows good spark but once you give it initial throttle the spark dies out to...
  2. SRosso

    Carburetor Jetting Need Help

    Hello, I have a 1980 XS650 that is stock except for UNI pod filters. I am having trouble with the jetting on the bike it has stock carburetors as well. The previous owner changed the main jet to a 140 when he did the filters. At first, it ran well then it developed a surge taking off from a stop...
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