wont stay running

[spldart]

At this time I'd yank the boot from carb to airbox and start again. See if it idle dies and see if
you got a very wet carb interior when it does.
But that's just me.

And read your plug as previous post said

[mobleydrew]

Originally Posted by spldart

Gas in airbox.
Once you start bike and the petcock gets vaccum to allow fuel flow you flood out....
Unless revving motor which keep the f/a mixture close enough to proper range to burn.

No gas in airbox now. Only found once I got bike home from purchase. Only mentioned in case air filter is messed up as a result.

[mobleydrew]

Originally Posted by raul10141964

Inspect the spark plug , black =rich white=line

PO replaced spark plug because it WAS only running with choke on all the time, so was fouled. I determined that the choke plunger was hanging up and not disengaging itself, which is why I replaced the plunger and spring. I checked plug last weekend. Looks good. slightly brown/tan. Not white and pitted as though running lean. Not black and oily as though running rich.

Ill try some of your suggestions tonight.

[mobleydrew]

Originally Posted by spldart

I may be wrong but it sounds like your float isn't set right.

Gas in airbox.
Once you start bike and the petcock gets vaccum to allow fuel flow you flood out....
Unless revving motor which keep the f/a mixture close enough to proper range to burn.

Good hypothesis, I do smell a lot of gas, once the bike stalls out, like when a car floods. why would it flood? float set too high? no gas coming out of over flow hose on rear/right side of carb that is connected to float bowl.

[jonathan180iq]

Float could simply be stuck, never turning off fuel flow.

[spldart]

If you haven't already download the service manual. Link on this web site.

On page 110, according to my pdf reader, is the needle valve inspection.
On page 111 is the float adjustment procedure.

[mobleydrew]

When I was rebuilding the carb, I did notice something that was odd and may have been missing. Since it wasn’t there when I took the carb apart, I ASSUMED it wasn’t supposed to be there. See the picture attached and what the arrow is pointing to. Is that the 10mm piece that threads into the carb casting itself, or does this little thing sit inside that 10mm threaded part, and the needle valve (attached to the float)just sits inside it? Needle valve seat might be the correct term for it.
(picture taken from Partzilla. My SM illustrations are fuzzy)

[spldart]

Your needle seat is missing??
Did you see threads where something was suppossed to screw in that position?

Originally Posted by mobleydrew

When I was rebuilding the carb, I did notice something that was odd and may have been missing. Since it wasn’t there when I took the carb apart, I ASSUMED it wasn’t supposed to be there. See the picture attached and what the arrow is pointing to. Is that the 10mm piece that threads into the carb casting itself, or does this little thing sit inside that 10mm threaded part, and the needle valve (attached to the float)just sits inside it?

[mobleydrew]

Originally Posted by spldart

Your needle seat is missing??
Did you see threads where something was suppossed to screw in that position?

Sounds like it.
The part that the valve needle seat is inserted into, the 10mm hollowed out bolt, for lack of a better term, is what the needle valve is currently resting in right now. Maybe it is the valve needle seat seat. Id send a pic of that if I had one. Sounds like I am missing something, huh?
Maybe the 13F3 carb is that different that the rest?

If this is what I am truely missing, then I must be flooding out. Wonder why the float bowl overflow is not allowing fuel to be spilling out onto the floor.

[blaine]

Originally Posted by mobleydrew

Sounds like it.
The part that the valve needle seat is inserted into, the 10mm hollowed out bolt, for lack of a better term, is what the needle valve is currently resting in right now. Maybe it is the valve needle seat seat. Id send a pic of that if I had one. Sounds like I am missing something, huh?
Maybe the 13F3 carb is that different that the rest?

Carb wouldn't be different in that regard.