Speak up
aerhed,
speak up, I've been following everybody's advise so far.
It's not personal, I am first and foremost interested in a safe airplane.
I don't see much harm, short or long term in tying a couple of wires to an aluminum line when properly isolated with 1/4 " rubber hose. It's an extremely difficult spot to reach for properly securing adel clamps, so I opted for rubber hose and zip ties.
Whatever else you see please point it out.
The kind of slow weeping leak would have never been detected, had this occurred in the engine compartment. I've had the very same fuel system installation in my RV-8 and with white interior paint never saw or detected any fuel stains.
However, all of the installation was exposed and visible up to the firewall.
In the 10, it is confined and not very accessible for inspection.
I have been diligent in applying proper torque values and from what I see,
this nipple simply needs another 1/4 turn to make it tight, effectively over torquing it just a bit. I am well aware of the effect of over torquing AN tube fittings but NPT threads just need a little more than the prescribed conventional torque value. As to having the high pressure fuel pump inside the cockpit, I don't see a benefit in having the high pressure boost pump up front. A leak in the firewall forward compartment is probably much worse than one in the cabin were you can smell it and apart from the flap motor no other ignition source exists. I deliberately put all these components including BP, flow meter and pressure sender behind the firewall to keep it on the cool side. I run mogas out of the right tank and keeping the fuel system cool is one way to prevent vapor lock.(another thread)
The fuel leak detector seems like a great idea, at least until you know the system is tight. It is quite a chore to open up the tunnel and get a good look at the fuel lines. Your nose can tell the truth too apparently.