installing new petrol tank
 

Hi all, anyone done this recently? My mechanic just installed a new one -- one of the originals all rusted out -- but we're puzzled: where does this black tube go? When old one came out the tube was just sitting behind the boot lining. Scary, surely? Also, what does that tube do?

once get this sorted can get driving the car and add to the thread on rpm.

Thanks for any insight.

What's the other end connected to or go? What age XJ ,assume series 1?

I just popped down to garage and took a few bits off my series 1 to see what I have. I had the tanks out about 6 months ago but couldn't remember any pipe around the area you show.
I would assume it is the overflow pipe from the filler neck. It connects to the hole highlighted in the pic of the filler neck and exits from the drain hole in bottom front corner of the petrol tank cover panel. The only other pipe is the fuel pump feed pipe from the tank base.

Unless you have a different set up.

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Another possibility is there's another pipe that drains the top of the boot shield. there should be a little tube on either side of the metal piece/shield at the top of the boot under the rear screen which it connects to.
Can't take any pics as I dismantled mine completely before I took any.

I have that one but it exits through the front lower part of the panel, not the rear upper like the OP's picture. But it does look long enough to reach and is about the right diameter for the drain pipe.
It may be just routed different on some years, or moved by a PO.

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solved!
 

Huge, huge thanks, @anjum and Clarke.

As per Clarke, the hose comes from the bottom corner behind the back light and stretches perfectly to the upper corner just above the elbow of the boot lid as per anjum's suggestion. Here there is a one inch metal pipe. Please see the pictures. I shifted some of the boot panels and see the same set up on the other tank. A super thanks to you. Ok, what's tomorrow's issue?

Graham

Thanks Series1fan, while I had the fuel system uncovered I decided I would finish a job I did part of 6 months ago. I replaced the rest of the fuel hoses and hose clamps I hadn't already done,and while I was at it fitted extra fuel filters between the tanks and pumps because I run my tanks very low all the time. I can't get my car over the top of the drive into the garage with more than 1/4 tank in each side. As well as replaced the main inline filter where the fuel line exits the boot.
There is still another filter at the front of the fuel line under the bonnet,but I think I will bypass that now as it is an old style cartridge filter below the brake booster. I don't think I will be needing it,unless anyone has a good reason I should retain it.

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Hi Clarke, that's an interesting issue you have with your driveway!

Nicely done though.

I'm going to post some pics of my car soon and I'll be sure to include one of the engine bay where there is a fuel filter up front. It'll be interesting to learn if it's stock or not.

What's your general take on keeping things stock? I understand you made this change to deal with the low level of fuel issue, but generally?

Also, I've read the original tanks should be kept as full of fuel as possible to keep water condensation out of them as the original tanks can rot fast. I now have an original and an after market tank. Yours are both after market, right?

My driveway has been discussed here before on many occasions. It has taken a fair amount of work to be able to park off the street without scraping all sorts of stuff under the car, even the engine sump hits if you hold your tongue wrong.

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My stance on keeping things stock is "wit", whatever it takes. These are old cars and I'd do anything to keep it on the road. I would like it to look as original as possible,including XK engine. But if push came to shove I would lump it without a second thought.

As for the fuel tanks,they are original. I thought one had a hole in it so removed them to check, turned out to be a seal on the drain plug. We don't seem to suffer the same rust problems you guys have up there. I fill the tanks when I know we going away,if they are too full when we get home it stays on the road...My Jeep gets first dibs on the garage most of the time though.

Love to see the pics of yours.

:icon_beerchug: