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1978 xs1100 wont start and pops thrug carb

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  • #16
    I think maybe the problem lies in the carbs more than the spark.
    How far are your idle mixture screws turned out? What was all included in the carb kits? What size jets etc are in there? What is your float height? How far did you go in the cleaning of the carbs?
    I have had times where it would not start or it would run like crap just because I missed something while cleaning. I have had it run poorly and miss etc because I had the idle mix screws set far too lean or rich.
    Right now I have to take a set back off a running bike and install a larger pilot jet as I have to be 6 turns out on my idle screws to get to anything resmbling a yellow/orange flame.
    Sounds like you have covered the electrical end but have not yet fully explored the carb situation.
    2-79 XS1100 SF
    2-78 XS1100 E Best bike Ever
    80 XS 1100 SG Big bore kit but not fully running yet.
    Couple of more parts bikes of which 2 more will live!

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    • #17
      Great I got my bike tuning and is tuning nice go figure the brand new plugs I replace before the rejeting went bad just got new ones this morning and it fired rigth up
      Thanks all I will be posting a few pics later of corse I still have to sinc the carb

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      • #18
        Great News! Glad she is kickin again! Hopefully you can get her tuned in and rockin!
        Nathan
        KD9ARL

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        1978 XS1100E
        K&N Filter
        #45 pilot Jet, #137.5 Main Jet
        OEM Exhaust
        ATK Fork Brace
        LED Dash lights
        Ammeter, Oil Pressure, Oil Temp, and Volt Meters

        Green Monster Coils
        SS Brake Lines
        Vision 550 Auto Tensioner

        In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

        Theodore Roosevelt

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