Piper Cherokee 180 Fuel leak in cowling area
Once in a great while, I noticed a fuel leak from inside the cowling when sumping the Curtis drain valve on the fuel strainer. It only occurs when activating the sump drain. Unfortunately, I didn't get the cowling off in time to pinpoint where the leak was coming from. The fuel drips from inside the cowling and exits to the ground from the bottom of the cowling. Then it usually stops for months before the fault suddenly occurs again with no warning.
Does anybody have an idea what is leaking and why it suddenly stops?