When fitting the new Teflon seals to the injector tips, DO NOT use any kind of lubricant on the seals, or in the injector bores.

By spark plug seals, I assume you mean the spark plug boss seals installed in the cam covers. They can be replaced with the cam covers removed.

Do the intake manifold gaskets have to replaced every time the superchargers is removed?? I replaced the gaskets about a month ago I will be removing supercharger again to do the valve cover gaskets

I have been told the large top gasket CAN be reused but I replaced it because I was not aware.
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I reused that one and I Will be reusing it again as long as it looks good but I don't think its a good idea to reuse the metal intake manifold gaskets because they are crush gaskets


lotusespritse
"Because they are the metal, crush type gaskets, they should be replaced every time. Could they still be reused, probably. But with the massive effort to remove the supercharger, I wouldn't risk it because they are inexpensive and easy to get."

Have you done this yourself? or are you just saying? because I just tried and the fuel line will not budge not even a little
I disconnected unbolted both left and right fuel rails from it does not matter It will not move

I am supposed to bend it out of the way like in this video? I am worried it will break

Do you know the torque specs for the cam covers?

9-11 Nm

The fuel lines are so stout they are almost impossible to bend. But yes I had to bend them slightly to remove them. Especially on the passenger side where the fuel line bracket is attached with a stud.

Circled in red below.


https://cimg2.ibsrv.net/gimg/www.jag...6427d79514.jpg

When you remove the nut on the stud not a bolt like Xalty said? There is no room to lift the fuel lines over and away from that stud. Why oh why Jaguar did you NOT put a bolt there instead of a stud??? Then we could have actually serviced the fuel lines!

Maybe some engine came with a bolt instead? Not sure but I have the stud setup on my car.
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If you remove the fastener circled in yellow, it gives a little more play to move the lines off of the stub.
And of course if you disconnect them from the HPFPs, a little more still.
https://cimg2.ibsrv.net/gimg/www.jag...c51acf0334.png

Good point! I had not got as far as the fuel pumps.
Yes I had that all that loose and was able to move the lines enough to do my work. The drivers side gave no trouble with the SS tube on top of the cover.
They put unions on most connections at the Y but one is solid!
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Yes, but like you say - no matter what you do, it's tough to move those lines.

Which of those four connections is solid? I'm about to do this job and would like to avoid bending the lines at all if possible. Thankfully these lines are usually very robust considering the 4-digit fuel pressure readings going through them.

In the green circle. I also wanted to avoid bending the fuel lines but could not. I just tried to bend them the minimum amount to get by.


https://cimg1.ibsrv.net/gimg/www.jag...735524b606.jpg
If that had a union on it like the other 3 connections then it would be simple to unbolt that 4-way connection and get it out of the way.
Now I did not go far enough like 12jagmark said up thread because you can unbolt that line down where it connects to the fuel pumps in the yellow circle.
Live and learn!
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What I thought was a small pool of coolant at the rear driver side turns out to be a leak from my valve gasket so looks like I'll be doing this job too..

Hey all, unfortunately the XJL's valve covers gaskets are caput. I dug a little on the dismantlers site that the pics in this thread are from and I found a 5L super teardown; . he gets to the covers at about the 19:00 min mark. Not having the slide hammer tool for the injectors He goes after them as I suspect I would. But then he gets to one that is stuck, So He just turns it. Anyone with experience with this repair have any comments as to weather this might be a viable answer to not having to pull and then update injectors?
TANKS

I thought that was common knowledge? Yes I always rotate the injectors before using the slide hammer. If you even need the slide hammer?

First I attempt to pull the injector rail by hand which if it does come free often removes the injectors as well. Just depends on how badly they are stuck. I also rotate the new injectors after install before installing the fuel rail. Not sure it does anything but I want to make sure nothing is in a bind.

Surprisingly all 8 of my injectors came out by hand and again all 4 on each side stayed connected to the fuel rail. I was expecting a big fight after reading all the other threads too.
I do have carbon on the tips which all of them will have.


https://cimg3.ibsrv.net/gimg/www.jag...1fd676ab81.jpg

Car had about 60K miles on it when I serviced the injectors.

Rotating them won't fix anything?
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On the 3.0 litre S/C V6 this is a pretty well known issue to go bad earlier than one would normally expect for Valve cover gaskets. I had to do it last year and it is expensive if you need a tech as there is much to take off to do it.