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1990 XTZ750 missfire please help

woody2
in Yamaha Workshop

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Posted

Hi can anyone help I have bought a yamaha xtz750 1990 with a missfire I have cleaned the carbs and checked the settings as it was running very rich but still missfires.Thought I would check the spark so out came the plugs, whilst cranking the engine over smoke started coming from the regulator/rectifier .Could a faulty reg/rect been the reason for the missfire I only cranked it over for about ten seconds.If I just replace the reg/rect is there any chance this will also burn out, any advice and help would be very much appreciated

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