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Dr650 fuel in petcock vacuum line?

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So I've been chasing and erratic idle for a while decided to pull the tank off today and noticed that when I pulled the vacuum line off the petcock fuel dripped out I would think that's not supposed to do that LOL what's your thoughts?

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Yup, that's not good, time for a new diaphragm....

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Was the petcock on prime, if it was that bypasses the vacuum and lets gas flow freely

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