Pawnee fuel tank vent drip

[Mike McCarron[_2_]]

Our club tows with a Pawnee and we have noticed a very slow fuel drip
coming out of the fuel tank vent. This drip happens most of but not all
of the time and it does not seem to matter whether the tank is full, half
full, or near empty. Any ideas as to what the cause might be?

Thanks

[[email protected]]

Check your fuel tank. They have 2 types ,...bladder or non bladder.
If I remember correctly, there is a catch pan below the tank...a bad
bladder or a tank leak can cause this. Fix before flying. It won't
get better.