At another pilot’s suggestion, I reconfigured the two fuel overflow lines and drilled a new hole that drains the fuel out of the engine compartment, away from the exhaust. The two areas where fuel can overflow in the engine compartment are the engine-driven fuel pump overflow, and the fuel controller overflow via the sniffle valve. By using some spare rubber fuel line, cutting up an old oil return line, using a spare brass t-fitting, and collecting a few hose clamps, I rigged up a different arrangement. Any overflow fuel will now safely vent out of the cowling away from the exhaust.
