Bubbles in the fuel filter?

[Vision]

There were no bubbles in the fuel filter. After ignition a few bubbles arrived from the direction of the gas tank. When I revved the throttle high more bubbles arrived. How is that possible? Does is mean anything?

[Ruffus]

Means there might be a leak somewhere, sucks air

[Stig / Major Tom]

Are you nearly out of gas?
Otherwise, agree with Ruffus....follow fuel line from filter to the tank. Looking for cracked fuel line or a poor connection of the line.
Might this air in your fuel line be related to your stalling at stops?
Stig

[Vision]

I'll keep at it.

The carb was cleaned yesterday and the pilot jet seemed clogged. It would make sense that that is the problem but time will tell.

[JJJoseph]

It means something's happening.  It means nothing, in fact!

[Vision]

To close this out, a bubble in the fuel filter seems normal.