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Old 05-30-2012, 07:18 PM   #1
oktulsa17 OP
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Joined: Sep 2007
Location: God's country and he can have it.
Oddometer: 207
DR650 carb leaking fuel

Not sure this is the right place, but here goes. My 06 dr650 (I'm the 3rd owner) with Mukuni carb is leaking fuel or should I say it's coming out of the air box. It started up just fine and then after a few mins of idling started running rough and then died. And then the fuel started dripping out of the air box.

I don't know much about carbs, but would like to fix this myself so I'll learn something for next time.

If this is the wrong forum let me know.
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Old 05-30-2012, 07:47 PM   #2
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Joined: Oct 2008
Location: Redmond Oregon
Oddometer: 993
Your vacuum actuated petcock has failed. Replace it with a manuel one from a Yamaha Raptor 660 quad. Also your float needle is probably worn out and is not seating properly which is allowing fuel from the failed petcock to flow into your airbox and possibly your engine. If you ride it with fuel diluting your oil you will trash your engine in no time. Fix the petcock and float needle then drain your oil and replace with fresh oil before you ride it! DO NOT RIDE IT UNTIL YOU CHANGE THE OIL!
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Old 05-31-2012, 05:43 AM   #3
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Joined: Jul 2005
Location: Glasgow, Kentucky
Oddometer: 3,855
Autozone has little packs of viton o-rings in assorted metric sizes that work for the float assembly. I think the package says "Help!" on it and we found it hanging on the back wall with other little Help! stuff. Be sure to get the metric pack. You'll see where they go when you pull the float assembly down out of the carb. The o-rings provide a seal so that the float assembly is a snug fit in the carb body otherwise fuel can leak down and flood the airbox.

'08 DR650, '13 TU250X

greer screwed with this post 05-31-2012 at 05:51 AM
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