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I was quite sure that my S6 tank is plastic. I am also thinking that there must be some line on top of the tank that is breathing fumes.
Because it is hot here, I think it just evaporates more.
Chris: AFAIK, all C4 fuel tanks are steel. There might be an anti-rust coating on the outside but the inside is definitely steel. As for there being a fumes line, you must have missed my C4 fuel system post from this past Sunday. There is a line from the top of the tank to the evaporative emissions canister that lives in the right front fender cavity behind the wheel well, accessed by removing the wheel and the plastic wheel well liner. Follow the links in the post:
Chris: AFAIK, all C4 fuel tanks are steel. There might be an anti-rust coating on the outside but the inside is definitely steel. As for there being a fumes line, you must have missed my C4 fuel system post from this past Sunday. There is a line from the top of the tank to the evaporative emissions canister that lives in the right front fender cavity behind the wheel well, accessed by removing the wheel and the plastic wheel well liner. Follow the links in the post:
The fuel smell is coming from the whell well under the fuel filler flap. I think that the line to the carbon canister at the tank is cracked.
Chris: There is no carbon canister at the tank. It is up ahead in the right front fender.
Furthermore, there is no separate vapour line between the filler and the carbon canister, just the one off the top of the tank. Perhaps there is an issue with the seal between the filler pipe and your fuel tank, trom the end of Item 2, to Item 1, the tank.
RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
Umm...you need to look for a fuel leak where the fuel line enters/leaves the fuel filter and the where the hose from the AAN fuel rail connects to the hard line by the firewall. The UrS6s are starting to leak at the latter point. The UrS4s used to leak at the former point.
RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
Umm...you need to look for a fuel leak where the fuel line enters/leaves the fuel filter
This failure is pretty common and can spray fuel towards the hot turbo and exhaust manifold. I believe in the US Audi actually recalled the urS due to this, however they never carried out a recall over here.
If the hose is original it is probably a good idea to replace it anyway with a heavy duty braided hose and proper fuel line hose clamps.
'93 S4 Avant now back on the road complete with new shiny go faster bits.
This failure is pretty common and can spray fuel towards the hot turbo and exhaust manifold. I believe in the US Audi actually recalled the urS due to this, however they never carried out a recall over here.
If the hose is original it is probably a good idea to replace it anyway with a heavy duty braided hose and proper fuel line hose clamps.
I think you miss understand, the smell on mine is coming from the REAR wheel arch not the front.
I think you miss understand, the smell on mine is coming from the REAR wheel arch not the front.
No miss-understanding here. You already have plenty of suggestions as to where your leak may be coming from. I was kinda making the point (whilst talking about fuel leaks) that this item should be changed as a matter of course. It's not going to solve a leak in and around your fuel tank, but it may prevent your car going up in smoke one day!
'93 S4 Avant now back on the road complete with new shiny go faster bits.
No miss-understanding here. You already have plenty of suggestions as to where your leak may be coming from. I was kinda making the point (whilst talking about fuel leaks) that this item should be changed as a matter of course. It's not going to solve a leak in and around your fuel tank, but it may prevent your car going up in smoke one day!
Thanks but they've all been done when i did the head.
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