Update on Fuel line repair
10-05-2003, 01:31 PM
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Update on Fuel line repair
It was a while back when I wrote about a repair I performed on my leaking fuel line connection to the fuel rails.
Instead of removing the entire line from fuel tank to rail (big dollars) I just cut the old crimped connector and replaced it with rubber hose clamps to the steel tube. Since these lines are under high pressure there was some concern from others within this forum. It has been a number of months now without any problems!
I notice the past few mornings (it's getting cooler out and this might cause contraction of the metal/rubber connector) that the other connector by the air box is now leaking. I will perform the same proceedure in the coming weeks.
Instead of removing the entire line from fuel tank to rail (big dollars) I just cut the old crimped connector and replaced it with rubber hose clamps to the steel tube. Since these lines are under high pressure there was some concern from others within this forum. It has been a number of months now without any problems!
I notice the past few mornings (it's getting cooler out and this might cause contraction of the metal/rubber connector) that the other connector by the air box is now leaking. I will perform the same proceedure in the coming weeks.
10-05-2003, 01:59 PM
#2
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I did a fuel line repair too....need some advice
It's the classic place where they leak, used an epoxy stick to repair it, worked great.
The season of fuel leaks are coming up (when it gets really cold in the winter), and it apears many 97-99 model years have this leaking problem. The 00 and newer have slightly different fuel lines.
My question is, I performed this repair, and others have too, should I post it on audipages? This is one thing that I think could be a liability....but isn't a brake job too?
So this repair is about $10 and takes an hour, the Audi dealer tells you that the entire fuel lines have to be replaced back to the tank because they are one part. It's an $800 part without labor.
Advice? Should I post the procedure? I think a lot of people will benefit from it.
<img src="http://www.audipages.com/Tech_Articles/enginemechanical/fuel1.JPG">
<img src="http://www.audipages.com/Tech_Articles/enginemechanical/fuel3.JPG">
<img src="http://www.audipages.com/Tech_Articles/enginemechanical/fuel4.JPG">
The season of fuel leaks are coming up (when it gets really cold in the winter), and it apears many 97-99 model years have this leaking problem. The 00 and newer have slightly different fuel lines.
My question is, I performed this repair, and others have too, should I post it on audipages? This is one thing that I think could be a liability....but isn't a brake job too?
So this repair is about $10 and takes an hour, the Audi dealer tells you that the entire fuel lines have to be replaced back to the tank because they are one part. It's an $800 part without labor.
Advice? Should I post the procedure? I think a lot of people will benefit from it.
<img src="http://www.audipages.com/Tech_Articles/enginemechanical/fuel1.JPG">
<img src="http://www.audipages.com/Tech_Articles/enginemechanical/fuel3.JPG">
<img src="http://www.audipages.com/Tech_Articles/enginemechanical/fuel4.JPG">
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Thorbjorn Liell (01-16-2021)
10-05-2003, 04:11 PM
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You should post it. Everything on audipages should be with a DIY disclaimer.
Your web site is a tool of information that some of us could not own an A8 without. I have limited resources and would not have bought my car if I had not found audiworld and audipages. Don't sensor yourself, we need the help.
10-05-2003, 04:13 PM
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Oh yes, please do post. that's the whole idea behind this forum- exchange of info to
improve our ownership experience. I haven't had the problem yet, and was wondering whether I should do this prophylactically. thanks!
10-05-2003, 06:49 PM
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Re: Fuel lines have to be replaced back to the tank because ...
they are one $800 part.
This may the way that Audi sells them, but it's certainly more than one line. Two of the major lines would be from fuel pump to fuel filter, and fuel filter to fuel rail. Since only the latter line is leaking, how about making a replacement for just his one line? Is routing that difficult?
The connection at the fuel filter looks like a standard banjo fitting. Once you find out exactly what fitting is used at that first fitting past the leak, connect them with a -6 or -8 AN braided SS line. These hoses and fittings are rated for 1000 psi versus the fuel injection system's max operating pressure of only 59 psi. To guild the lilly, you could cover the entire line with a standard fiberglass and silicone rubber fire resistant sleeve. This protects eventhing around the AN line as much as the line itself. If the SS line vibrates, it tends to abraid whatever it's touching.
This may the way that Audi sells them, but it's certainly more than one line. Two of the major lines would be from fuel pump to fuel filter, and fuel filter to fuel rail. Since only the latter line is leaking, how about making a replacement for just his one line? Is routing that difficult?
The connection at the fuel filter looks like a standard banjo fitting. Once you find out exactly what fitting is used at that first fitting past the leak, connect them with a -6 or -8 AN braided SS line. These hoses and fittings are rated for 1000 psi versus the fuel injection system's max operating pressure of only 59 psi. To guild the lilly, you could cover the entire line with a standard fiberglass and silicone rubber fire resistant sleeve. This protects eventhing around the AN line as much as the line itself. If the SS line vibrates, it tends to abraid whatever it's touching.
