Possible tank leak search help needed.

[beeryboats]

Hi all,
I posted a help needed on this issue before, but now I have a photo. I got the header tank out without leaking a drop of fuel even though it was half full. The secret you ask? All the inlets and outlets were plugged solid! And I removed the semi-rigid rubber fuel line on the right side. At one time the builder opened the hangar door to find a puddle of fuel and an empty R/H wing tank. Since then it has set for ten years. So now I'm looking for a leaking tank problem. I've been told to do the balloon on the cap vent, but take a look at the photo and tell me if those fittings look ok to you.
Thanks,
Jay

[cap01]

pretty nasty looking but probably didn't leak a tank of gas on the hangar floor .
I'm not a fan of a poly / galvanized combo. if it needs taken apart , Kitfox has some permatex 9a that works really well , a little messy but works well for sealing the fittings in the fiberglass tanks . just be careful not to over tighten and strip out the threads in the fiberglass when you put it back together .

[jrevens]

Hi Jay,
That looks like a nylon barbed hose fitting. Nylon can get relatively brittle over time & is much weaker than any metallic fitting. Even baring that, I don't think it's a good choice for a fuel fitting. I would personally use brass or stainless steel, or even anodized aluminum instead of nylon. I would use the same metal for the threaded bushing. That's just my personal opinion based on standard aircraft practices.

[Wheels]

Yup, replace that plastic/poly stuff. Your fuel system is the lifeblood of ignition. ignition is the lifeblood of compression … lifeblood of spinny thing in front … or sometimes in back, but ultimately lifeblood of thrust, which is usually how we overcome gravity and … have fun and stuff.
I replaced mine by purchasing the new ethanol resistant tanks and replacing the entire fuel system. Probably NOT necessary if the rest of the system is healthy, but mine was not. I had two power failures related to fuel in 250 hours, so I did the whole thing. I'm not a fan of unsanitary fuel or oil delivery systems. Fix it or walk. Flying isn't an option unless you like to gamble.

[beeryboats]

I know, pretty stupid. I'm going to change over to brass. Is that bushing a finger strainer going back into the tank? I also wonder why they don't put inline filters between the tanks and header tank?

[beeryboats]

Ok, to answer my own question, yes there is a finger strainer. Mine however, has a large hole in the end. It was very hard to photograph, but see for yourself. I'm pretty sure that's a generic item. Aircraft Spruce maybe?