Faint odor of avgas in RV-9

[don.olandese]

some of this stuff I would probably never have thought of! research begins this evening, when the temp drops below 95! will broadcast whatever i find, for thread closure, tho it may take longer than tonite.

[Bavafa]

My experience,
if you smell it then it is there even if it is very hard to find it.

If you have Andair fuel selector valve make sure you have stake the tiny screws. I had missed that but was able to do it in place. Also just like, had a faint smell of fuel once in a while under a certain condition. It end up being from the wing root area on the tank. Tightened the screws a bit and no more smell since.

[ClayR_9A]

Me too... had a leak last month at the bottom of the access panel on the tank. I smelled it in the cockpit after landing.
Seems like this is pretty common recently!

I've had the tanks off to fix various things 5-6 times, I think! It is one of the jobs I hate the most and makes me want to kill whoever thought it was a good idea to bolt the tanks on through the spar.

This time, I'm not using the cork gasket again. I've learned my lesson and am just going to proseal the panel on and hope it never leaks again.

I was also surprised at the blue staining around the fuel sender gasket (Princeton capacitive probe). I guess I'll tighten those bolts a bit more.

[PCWebb]

My experience with fuel smell in the cockpit was traced to the Andair fuel valve. It seems they had a run of valves that had bad o-rings, guess who got one of them? Anyway, once we figured that out, the Andair folks quickly sent a new valve and problem solved.
Any hint of fuel smell in the cockpit means just that, there's fuel loose in the cockpit!

[Steve A]

I had a smell that I traced it to the fittings in front of the fuel totalizer between my fuel pump and fire wall. I tightened the fittings down and finally got rid of the gas smell forever.
It was worse when the fuel pump was on. Ah glad to be flying more and working on the plane less.

S S Anderson