hey everyone,
When i removed the bottom skidplate while searching for a clunking noise and found an oil drip on the cover for the fuel pump shaft? I'm assuming that is what it is because i can't find it in the parts diagram. I'll see if I can post a picture. Anyone have any input, is this a simple fix, or a dealer type of problem? This is on a 5.0 non sc 2011 XJL.

 

You call that an oil leak? Try owning a V12 XJS.

Seriously though, the fix depends on what's under that cover. If an O ring, I'd replace it. If not, and they used a sealant, the trick lies in replacing the sealant.

 

Yes, not big, just annoying and a fire hazard when it puddles on the skid plate. For a car thats 85k new, you would think the limeys could engineer a decent seal!--end of rant...
just wondering if anybody can tell me what is this cover too? any mecanics out there?

 

Its just an o-ring repair. That's the vacuum pump that is driven by the fuel pump cam. Easily removable and o-ring/seal replacement. Will lose some oil when removed FYI.

 

The vacuum pump seal carries JLR part number C2D3771 and is available from SNG Barratt, one of the forum sponsors:

https://www.sngbarratt.com/English/#...&saveBranch=US

 

"you would think the limeys could engineer a decent seal"

Why would you think that? There is a wealth of evidence, spanning many decades, to the contrary.

 

Amen to that!!!

 

DOH!---Palm to forehead----Theres a reason they dont have a space program!

 

Thanks for everyones help, i.ll put an order in with barrett. Learn something new every day and got a laugh too!

 

But they should, because they take up space in school!

 

did that fix your leak?

 

I am curious too, Have an XJ and oil on skid plate. Did you have any luck with fix?

 

I probably have a similar problem on my non SC XF 4.2. Can someone give me the part number for this seal?

 

Are you sure the 4.2L has a gear driven vacuum pump? It was added when they released the new 5.0L V-8.
My old 2005 STR with the SC 4.2L V-8 did not have that.
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That's a good question, i'm really not sure.
If the 4.2 does not have a VacuumPump, what is the part where oil drops can be seen on my picture?

 

I had a similar leak. On mine it was leaking from the vacuum connector. See this thread. https://www.jaguarforums.com/forum/x...light=oil+leak

 

Many thanks for your post, that is exactly the solution for my Problem.
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Thank you for your support. Greetings from Munich.

 

Well again he has a 5.0L and you posted that you have a 4.2L which does not have the vacuum pump?
Post back how you fixed your oil leak. It looks like the belt tensioner and I would clean up the front of the engine and watch where the oil comes from. The only leaks I had on my old 4.2L SC were from the oil cooler hoses but I don't think the NA version of the 4.2L has those?

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The only two photos of my engine are the ones above. Also got the traces of oil in the plastic protection cover.
It may be that this is not a vacuum pump, i dont know. If so, can someone tell me what kind of part is that where you can see oil droplets?
No oil contamination can be seen above this part