Gas Leak

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Old 02-17-2008, 06:58 AM
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Default Gas Leak

96A6Q dripping under front pass seat. Appears to be from around a mounting bracket for the gas line. Anyone ever had this happen? Too cold here to tackle so may have to go to indie along with the previous thread re: the t-stat. When it rains, it pours.
Thanks for any advice.
Old 02-17-2008, 07:29 AM
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Default probably worth trying JB Weld for a temp fix

either until you can get it to the shop or until it warms up enough to work on it.
Old 02-17-2008, 07:43 AM
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Default Re: probably worth trying JB Weld for a temp fix

Hadn't thought of JB. Thanks for the tip. Seems to drip at the same rate whether running or not.
Old 02-17-2008, 02:07 PM
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Default You might try exposing the leak...

See how bad the "damage" is and then pull the metal fuel line down away from the body so you can cut the fuel line in half, right at the damage. Or, cut out about 1/2" section of the metal line, either side of the "damage."

Then go buy about 6" of fuel injection rated fuel hose sized to fit over you metal fuel line....probably 1/4" or 5/16" ....and 2 hose clamps.

Spray a little spray lube inside the hose and slip one end onto the metal fuel pipe, slip on both hose clamps, slip the other end onto the other section of fuel pipe, and then tighten down your hose clamps.

Done.....permanent fix.
Old 02-18-2008, 04:21 AM
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Default Re: You might try exposing the leak...

Thanks so much for the advice. I'll try and get a better look if I can get the mounting bracket off. it's pretty cold here in Buffalo so I may have to take it in as my garage is not heated.
Old 02-19-2008, 06:13 AM
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Default I've fixed this on my A6 and 200...

Both had pinhole leaks inside the rubber brackets. Crud builds up in there and corrodes the line. I did the 200 in the driveway in February in Vermont. Not fun!

As austinado16 suggests, cut the fuel line and replace the section but use metal brake line. I found that it was easier to remove the fuel line entirely from the car. Undo the fittings at each end (near fuel tank and in front of the cats). Then pop all of the brackets with a screwdriver and pull the line out. There's a shield by the cats that can be loosened to make access easier.

Measure the total length of the line...end to end. When you replace part of it, the full length has to come out the same. Go to your friendly parts supplier and get a length of replacement metal brake line the same diameter. It doesn't have to be metric. A close inch size works. Also get a couple of compression fittings.

The section I replaced was about 24" long and spanned 2 rubber brackets. I cut the bad part out of the line and carefully bent the replacement to exactly the same shape. Don't make the bends too tight. Now fit the replacement into the line and secure the compression fittings. Measure the line end to end to make sure the total length is right.

Now reinstall and check for leaks. I've done this twice and it makes a good, permanent fix. A new fuel line is expensive.
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