Hi all, I'm still getting a fuel smell in the boot. I've renewed all the pipes , in some cases more than once and the trouble according to my nose is the fuel pump pipe from the swirl pot. Its a short tight bend but despite replacing the pump and pipes and using high quality jubilees I can't get rid of the smell. I'm going to drain the tank and pull the sump out today and start again.Any thoughts??

 

New 1/2 inch pipes of the correct shape are NLA from Jaguar. But, Andy Harvey at just XJS has some which he has had made up. The old pipe may be porous.
If no go with Andy, there is only one other source that I know of, from the USA, and I have recently used one and they work very well:
https://www.fillernecksupply.com/1-2...0mm-rmi330010/

You cut out what you need, in the shape you need.

 

Your some boy Greg!! Thanks.

 

You are welcome, Brinny. I have also improved my layout in the boot, by installing the pump as in the photos, and inserting my smaller Sytec filter as shown. I have removed about 4 feet of fuel pipe from the boot by so doing, and my boot is 100% smell free.

The pump inlet is at the back of the boot, I used the USA piece to fit it, cut into two pieces, with a straight joiner to connect them, to give me the exact shape needed.

 

Just so that you don't run out of things to think about......

https://www.jaguarforums.com/forum/x...l-hose-218246/

Cheers
DD

 

Also.....

Have you thoroughly washed down the boot compartment and...this is important.... removed the carpeting for cleaning?

You may well have fixed the source of the odor but, since the boot compartment isn't really ventilated, the carpeting will hold the aroma for a long, long time.

Cheers
DD

 

Perfect! Just bought this. I love the setup with the sump, filter, and pump. Don't know how ya got it like this just yit,,, but I'm on my way... Your straight connect,,, is it brass, pvc, steel, what? And, barbed, flared? Tell me sumpthin 😊

 

1/2 inch O/D brass barbed straight connector.

 

I endorse everything said with the following addition. Replacing my filter, pump, hoses, and tank eliminated most but not all of my fuel odor.
The final piece of the puzzle were the hose in the fuel lines going over the top of the rear suspension. Both hoses we original. The passenger side one is under pressure from the pump and was leaking with the power on. It had dry rot cracks. The return line did not have apparent issues but it was 33 years old too so it got replaced. It's a bit of a chore to do but just like replacing the engine bay hoses it has to be done. I have ZERO fuel odor now.

BTW....pull your sump tank and check it for cleanliness and filter condition. I was shocked when I did it.

 

Yes, take all the carpet out and wash it. If you don't want to remove the pieces glued in use a Spray N' Vac foam on them and let them air out for a long time.

Pad under the tank could have fuel odor too. Pulling the tank is hard (it was for me) but I wound up getting a new tank (probably didn't have to until after I screwed mine up using some kind of East Wood tank sealer kit) so I pulled the pad up at that time.

 

another thing to do on the list....never ends haha

 

I've replaced a couple of hoses in the boot with marine grade. Got a bit of flattening on the sump to pump one but we shall see if its a problem. Left boot open to clear smell and then I will re fill and see if its sorted.

 

May I ask how you drain the tank? Not sure which XJS you are working on...I want to drain the fuel tank in my 92 4.0 XJS. I currently have disconnected the hose at the fuel rail and run an extender hose into a gas container. But the ecu only lets the pump run for 2 sec. lol.

 

Hi, there is a drain plug under the bottom of the sump tank. Pull the grommet out from under the floor and you will see it. Mines an 89 convertible. I can't remember if the 4.0 has a sump tank but if it does thats how to drain it. Quite simple really which makes a change on these cars!!

 

The tank and pumps are the same for the 4.0 and V12 cars.
Drain the tank via the sump tank. Take all the carpet out on the floor and covering the tank. make sure the drain holes are open in the bottom of the trunk pan to deal with any spillage. Open your filler cap to break the vacuum.

 

Brad
Later cars had in-tank pumps and no sump tank, so a 4 litre car might be in-tank pump. I do not know at what VIN number the setup changed.

 

My 4.0 was a j reg 1991. One of the first facelift cars and I don't think this one had a sump tank. 3.6 did. Wasn't 100 per cent on 4.0 but now I'm pretty sure your right.

 

Thanks everyone, I couldn't find reference to a drain in my 4.0 repair manual...anyway, ended up siphoning to get the old gas out. Mine is also an early facelift, build 6/91 and has the in-tank pump.