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Scooters - 125 to 300 => Agility 125 => Topic started by: Vision on March 05, 2026, 06:46:05 PM

Title: Bubbles in the fuel filter?
Post by: Vision on March 05, 2026, 06:46:05 PM

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?

Title: Re: Bubbles in the fuel filter?
Post by: Ruffus on March 05, 2026, 08:11:46 PM

Means there might be a leak somewhere, sucks air

Title: Re: Bubbles in the fuel filter?
Post by: Stig / Major Tom on March 06, 2026, 12:19:55 PM

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

Title: Re: Bubbles in the fuel filter?
Post by: Vision on March 08, 2026, 02:16:28 PM

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.

Title: Re: Bubbles in the fuel filter?
Post by: JJJoseph on March 10, 2026, 03:34:52 AM

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

Title: Re: Bubbles in the fuel filter?
Post by: Vision on March 14, 2026, 08:29:44 PM

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