914 Fuel Smell in Cockpit

Hi Dave,

Possibly over full tank(s) venting in climb.

I have both wing and fuselage tanks - if I overfill the fuselage tank, I often get fuel smell, associated with climb out.😈

Dave, The 914 has a very high fuel return. You mention checking the engine side of the fuel lines but the leak may be in the return lines as happened to me with one of the return lines to the wing tanks. I can isolate either of these to prevent fuel returning to another tank and overfilling it.  The note about the vent lines from the tanks is worth pursuing too as a leaky vent line particularly for a fuselage tank is quite dangerous. Cheers.

What exact hose was used for the rubber replacement? Brand and spec.

Look for leaks at all fittings. Some fuel hoses are more permeable than others and using fuel injection hoses is desirable.

I had a persistent minor fuel smell in the cockpit until I changed all fuel hoses to the Gates Barricade brand. I used their carburetor version, not the fuel injection version. FI hose is unnecessary unless you run FI pressures.