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Mystery rough running issue

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    Mystery rough running issue

    OK, I just put in my 83 motor into my gs 1100. It runs a bit rough, exactly like the last one. Valves are set, new dyna s ignition, new plugs. My guess is the carb. Its a single mikuni on a rajay turbo kit. Not sure how to logically isolate the offending issue. Any ideas? It stumbles down low. Once i get the charging sorted I'll either take it to a dyno or buy a wideband. I think the ard is a hsr44.
    Last edited by turbojonn; 11-16-2015, 12:00 AM.
    1981 GS 1100e turbo, 83 motor, turbo pistons, new head, new turbo, backed and welded clutch basket, Dyna S ignition, cbr 929 front end, gsxr 750 rear end with 190 tire, all carbon fiber covered bodywork.
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