I just picked up a used A4 2.8 and didn't notice until now that there is a gas leak in the area behind the rear left wheel. Any ideas or suggestions on where it may be. It's not very much, no liquid is actually seen, just strong odor.
Thanks, Vic
Did you climb under and look? Leaky fuel filter connections maybe?
Thanks, but I found the problem. Some idiot drilled a hole through the sheet metal in the trunk behind the left rear seat into the tank. Nice! I'm going to cut out a little trap door -- 2 inch round -- and put a permanent epoxy fuel tank patch on the hole in tha tank. I gave a cursory look under the car and it looks like there are 2 or 3 fuel tanks, either that or the fuel tank is a very odd shape and hugs the underbody. Anyway, where the drilled hole is the top of the top is almost impossible to get at. The only way to get at it seems to be to loosen the whole rear suspension and drive shaft. I think cutting a small access panel shouldn't be a problem. There is already some kind of access panel behind the rear right seat that is about six inches around.
Any thoughts from the group would be appreciated.
Thanks,
Jim,
Great idea. This way I can minimize the size of the access hole. However, I don't think I'll use silicone. I've tried it before on another car and it doesn't last when in contact with gasoline. I'll use the screw like you said but use two part epoxy made to patch gas tanks.
--Vic
Look for a product called "seal all". I used it on a very leaky 200q tank and it works. It is gasoline resistant. for the larger areas of rust (around the seam), I used lots of seal all and a fiberglass mesh, such as you would use to patch a hole in drywall. Works great. Do a search on audifans for other testimonials.
-- Tom Werner
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