While I feel your pain and sounds like a lot of jicky jack work to get the gasket changed, it reminds me of an old Jaguar Joke.

Following WWII, Jaguar was going to design and manufacture refrigerators but soon abandoned the idea because they couldn't figure out how to make them leak oil.

Heard same joke in relation the Harleys too.

 

I was always told and was under the belief that Jaguars do not leak oil. An old Brit mechanic told me way back when I had my XKE that what was on the floor was called "controlled seepage".

 

"Total loss system" is what we call our press's lube system.

To the OP, valve covers aren't horrible. Usually they'll leak in the spark plug holes and foul out the coil packs. We did it on my sons Jag 3.9 in his LS. Best done with the car on stands so your back doesn't take such a beating. Pretty much get everything out of the way, wiggle the cover off and replace the gasket. Use some heavy grease to hold it in place and not stick. Bolt back together and hope it doesn't leak.

 

Fortunately, from what I could see, the plug holes looked clean and dry.
Not that I could get the plug cover entirely off, as that would mean disconnecting several things just to remove that plastic cover, and I was just in 'exploratory mode' at the time. What happened to the day when I could change all eight plugs in 10 minutes? I'll be futzing with several odd-ball connectors for half an hour just to even get to the plugs.
Interesting, the service manual just says to put two beads of silicone gasket sealant, 3mm diameter x 12mm long, in just two specific spots on the gasket before replacing the valve cover.

 

Oh great..

"10 . Using the special tool, disconnect the fuel line."

Don't you just love it when you need that 'special tool'?

 

Ok, this just went from 'Aw... Crap', to 'Holy Crap!'.
I found the 'special tool' (part number 310-005) 'FUEL SPRING LOCK DECOUPLING TOOL' on the JLR Tooling and Equipment Web Shop, for 117.59 freakin' pounds, with a ship date of mid August!

 

https://www.toolsource.com/fuel-line...-p-131920.html

Looks the same to me for less that $6 The part is 310-D005 (you missed the "D")

 

Yeah, I don't think hardly............
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds

 

Or even...

 

Thanks guys! That does look like what is actually pictured in the service manual and labeled '310-005'.
I thought the diagram in the manual was of the connection, not the removal tool.
On the web, the 310-005 tool looks much different:

https://jlrequipment.service-solutio...px?SKU=310-005

I'll take a closer look at what is actually on the fuel line.

 

Harbor Freight also sells those tools....very simple to use.

 

Yes, just make sure the fuel system has depressurized before popping them off...

 

A google image search for JAGUAR FUEL SPRING LOCK COUPLING TOOL, the exact nomenclature from that diagram, shows only the 'normal' tools and nothing even close to what your picture shows. I wouldn't even know how your tool would work, and for what reason.

 

Yes, because KJ missed typing the "D" in the part number. He typed 310-005 and it is 310 - D005.

 

 

Regardless, it looks like the cheapo tools above, but only one size, and with a Retainer-like thing to prevent pressure-induced separation.

 

The tool that Sean cited is the correct tool. I bought this assortment which includes the green tool used for 1/2" fuel lines:

I had to disconnect the fuel line coupling on my 2007 XK last year as part of the process to replace several of the coolant hoses. It was necessary to remove the intake manifold to access the little hose that runs from the engine valley up to the throttle body, hence the fuel line had to be disconnected.

 

Ok, so it looks like the manual is wrong in the valve cover removal section (page 1363 of the copy I have):


Wrong part number: 310-005
Elsewhere in the same doc has the 'correct' part number stated by Sean:


Correct part number: 310-D005

So again, thanks guys for putting me on to the correct tool, and like Cee Jay said, not sure what I could have done with that incorrect tool.

 

The tool Sean linked to, looked a bit more durable, but this Amazon set comes in at the same price (when including shipping), so I'll give it a try. Thanks!

 

agreed and maybe used one more time after this so durability is not a long term concern.