Gas leaking out of one of the carb vent tubes. Doesn't look like any float issues.

[lettuceman44]

Hey, so this started happening again :/

In addition, the petcock seems to leak when set on prime. Maybe it was a petcock issue all this time.

I' thinking about replacing the petcock. Is OEM the way to go?

edit: Yikes, a petcock looks to be $100. Gonna have to wait until next month to get that

Gonna check the floats again, but like last time I doubt there will be anything that looks wrong.

 

[Darin Jordan]

Did you ever find a resolution for this??

I got my bike back up and running yesterday, after repairing some damage after dumping it on it's left side leaving a stop-sign about a month ago, and doing a valve adjustment.

I decided to re-jet it down a size leaner as well (it's been a tick rich for the last 12,000 miles or so) as well.

When I got it started yesterday, I found that fuel was POURING out of the T-Vent between #3 and #4. Petcock is fine, and the floats for at least the #4 carb, which were all brand new with the rebuild of the Carbs about 5-years ago, still floats fine.

Looking at the Needle, which were also replaced during the rebuild, there does appear to be a slight "grooving" where it rests in the seat.

I've ordered a new set (4) of genuine Mikuni Needle/Seat assemblies after reading through all these threads. They are spendy ($31.95 each), but I felt that the K&S units, which I believe are what are in there now, maybe aren't the quality that the originals are, so I popped the $$$ for the real thing.

I feel this is the most likely cause at this point. Another clue was that the float bowl on #4 seemed over-full when I removed it, and compared it to the #3 bowl when I removed that one.

 

[Darin Jordan]

Found the problem with mine, I believe.



Aside from the float levels being too high now, which I'm going to attribute to time and needle/seat wear, it appears that the bowl gasket on #3 was interfering with the float, keeping it from closing the needle.

Replacing gaskets and needle/seat assemblies and will reset everything.

In the meantime, I'll research here to see about the appropriate float levels for the Stage 3 Dynojet kit to see if it varies from the factory 22.4mm +/- 1.0mm.