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Fuel line from fuel filter to rear wheel arch area
A couple of years ago I worked on my fuel lines to replace all hose sections with new. I thought I had caught everything until the other day when I was checking a suspicious smell of fuel around the fuel pump area. I removed some of that foam insulation from the wiring that seemed to be soaked in fuel but could not find any signs of a leak and I am still working on that amongst a plethora of other things.
Whilst working this issue I also inspected the fuel line emanating from the fuel filter and removed some foam insulation from where it disappears under the tank. As I inspected this I got the impression that rather than being a hard piped line I saw what I thought looked like fuel hose. Just wondered if anyone can confirm whether this section is hose or whether I did not see this correctly. Given this is a high pressure section of line I certainly do not want to be running around on rubber hose of unknown provenance.
If there is a section of fuel hose in there has anyone gone about replacing this either with new or revamped sections? PET is not clear as to what is present. Maybe I will drop the tank harness a bit but am not too keen on doing that as the tank is full at the moment.
Fred,
Mine is an 83, but I did all those lines some years ago, and the foam covered part from the filter up into rear guard to the accumulator is a HOSE on my car at least.
hth
jp 83 Euro S AT 57k
I'll take a closer look at that over the next day or two.
That one is subject to neither the flexing nor the heat cycles as are those in the engine bay.
Somewhat surprised that I missed this line.
Be prepared to buy a new right-side liner if yours is original (and why wouldn’t it be since the only reason to touch it is to replace that line or the marker bulb...)
That one is subject to neither the flexing nor the heat cycles as are those in the engine bay.
[color=#333333]
Be prepared to buy a new right-side liner if yours is original (and why wouldn’t it be since the only reason to touch it is to replace that line or the marker bulb...)
Dave,
i would think it does better for the very reasons you mention but 25 years with hottish fuel flowing through it? The line from the tank to the fuel pump was not too clever and that has no pressure.
Cannot remember what I have in the wheel arch.
It is a never ending quest looking after these things!
That one is subject to neither the flexing nor the heat cycles as are those in the engine bay.
[color=#333333]
Be prepared to buy a new right-side liner if yours is original (and why wouldn’t it be since the only reason to touch it is to replace that line or the marker bulb...)
Dave,
Had a good look in there today as I had the car on my home brew lift bars and axle stands. Did not have to worry about the wheel well liner- the top section obviously disappeared some time ago! I believe the early GTS's were like the S4 in terms of wheel arch lining- i.e. not foam inserts [I like the idea of that spray on foam on top of the original inserts in your other thread].
It looks as though one would have to remove the cover that sits under and to the side of the fuel tank to get it and thus I suspect one would have to lower the tank mounting cradle to do so?
On the positive side I realised that in my storage bins of harvested spares from my late S4 I have one of those that's been sat idle for nigh on 15 years since I lost the dear thing. Not sure I would want to reinstall that item given it saw about 14 years of service but at least I have something to work with at a pinch. Why they put that foam insulation over it is a bit puzzling to me- it does not look to give much in the way of mechanical protection if that is what it is meant to be.
Fred: do yourself a favor, and get a Greg Brown fuel line replacement for that one - that way you will never have to think about it again once installed. Did all of mine during the year 2013, see the following two (2) pictures for where it went and how it looks.
Had a good look in there today as I had the car on my home brew lift bars and axle stands. Did not have to worry about the wheel well liner- the top section obviously disappeared some time ago! I believe the early GTS's were like the S4 in terms of wheel arch lining- i.e. not foam inserts [I like the idea of that spray on foam on top of the original inserts in your other thread].
On this side of the world all 91+ got the self-destructing full liners both sides. I don't have an early '93 (RoW '92) to look at right now, but why would the factory use the full liners on '91, skip '92 and then put them back in '93-95? However, what's interesting is that, if you look closely at Arnoud's picture you'll see a little hole in the sheet metal in roughly center frame. Whereas on your picture you'll see an impression of that hole, but no hole. That hole is for one of the three plastic panel clips that are part of the fastener assortment for the full liner.
It looks as though one would have to remove the cover that sits under and to the side of the fuel tank to get it and thus I suspect one would have to lower the tank mounting cradle to do so?
That's how I've done it. The part of the cradle through which that line runs is usually completely full of debris which will rain down on your face if you don't remove the cradle. Drain the tank, remove the filter/pump assembly. Remove the cradle, clean it, de-rust and POR it if necessary (which is usually necessary.) Service the hose on the in-tank pump. Clean the sender while you're there and the tank is empty.
On the other hand, if you wear a helmet with a visor you can probably just do the line.
Why they put that foam insulation over it is a bit puzzling to me- it does not look to give much in the way of mechanical protection if that is what it is meant to be.
Either just enough to protect it from vibration damage or heat rejection? Or perhaps noise abatement. Or all three.
Last edited by worf928; 04-23-2019 at 11:35 AM.
Reason: wareposter full moon
04-21-2019, 04:01 PM
Fuel line from fuel filter to rear wheel arch area
you can probably just do the line.