Another carb issue/question

[bravo]

I also am having a small problem with the carbs leaking on my P2004 Bravo. I discovered that they are leaking after having moved from a tie-down into a hangar. On the ground, if the fuel valves are left open, there are no drips, even after several hours. In doing some troubleshooting, I have found that if I run the electric fuel pump for a short time, slow drips show up through the overflow tubes after about 15-20 minutes. I think the drips stop as soon as the pressure from the fuel pump releases. The plane is just out of annual and the float arms and needle pins were replaced (the drips were occurring before the annual).

Any thoughts from the group?

[buzz]

Were the floats weighed at annual?

[bravo]

No knowledge of that

[LSA Flyer]

Deleted by poster.

[buzz]

I am no expert so my advise is worth what you paid for it. I just went through a similar issue on my 914. I had been having random drips of fuel from my vent line for a few months. I didn't think it was a big deal so I ignored it. The day I had my annual done the issue showed up again but in a much bigger way. Everything on the annual was complete with the exception of pulling it out and cranking it up. As soon as I turned the master on I had a full on stream of fuel coming out of the left side and it would not start. Obviously the reason for not starting was that it was flooded. I thought for sure that I had a heavy float or two. So we opened up the float chamber. Upon weighing we found that they were right where they should be. We did however find a small amount of debris in the chamber. Some bright blue fibrous material kind of like the blue shop paper towels you can buy. Also some black material that could have been rubber from the inside of rubber hoses. In addition we found that the vertical pins that the floats ride on were a little dirty. So all of that was cleaned up and it runs fine with no drips. Like I said I am not an expert but I learned a valuable lesson I think in not ignoring a warning sign. Again this went from random drips one day to a full stream of fuel the next. Opening up the float chambers was quick and no big deal for my mechanic.

[cole505]

Good trouble shooting Buz! Very nice work! Thanks for sharing✈️✅😊🇺🇸🇺🇸👍🏻

Ray

[jboyd]

Just curious but were both of you using Mogas exclusively, 100LL exclusively, or a mix?

[buzz]

100LL exclusively

[bravo]

Mogas exclusively.