Question about 1984 Yamaha XJ 400

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Hi i have a 1984 yamaha moto 4 quad it won't stay running but it has gas and spark

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Are you sure you have gas? How long will it run until it dies? If it dies out once it warms up then you have a coil problem. More than likely what is happening though is that you have enough gas to start the engine but the flow rate is affected somehow and the carbs are not able to continue to supply the proper fuel amount. I would suggest rebuilding the carbs.

Posted on Sep 05, 2009

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Posted on Jan 02, 2017

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