stalling problem

[my425E1979]

hey fellas.. anyone out there have this problem?

bike idles fine warming up.. and runs fine through the gears on the road, but once the engine warms up, it wants to stall.. its ****ing me off cause the bike was running fine, and then started doing this sheet out of the blue.. i had initially thought i had bought some bad gas, but that's been ruled out now.. i also recently replaced my floats, but the bike still ran fine for a while before acting up.. actually failed my road test the other day cause i had to keep giving the bike gas through the cones and it screwed me all up... it just sucks not having piece of mind about your bike.. anyone have any ideas? [-o<

[chef1366]

Check venting in your gas cap and flow through your petcock. Does it do it with your petcock on prime?

[my425E1979]

interesting

you mean if i switch the thing to prime and the problem goes away, i have a vacuum problem?? as far as gas cap venting, i had my tank off one day while i was working on my bike and at some point i tipped the thing on its side and gas started flowing down the side with the cap supposedly snugged up... is this abnormal for a '79er?? maybe i need a new gasket??

[chef1366]

You could have a bad petcock if your bike runs well on prime.