Yes, that gets replaced with the parts above. I replaced the water pump too, so it's all new. I didn't want to leave any of the original plastic in there because it all turns brittle.

I am still enjoying worry-free driving of my XF's while watching all the blow engine threads from cooling system plastic failures.

For those that are just replacing the pieces that are breaking, you're going to find out the hard way that the others will break and you could lose your engine which equals losing your car considering the cost of an engine replacement will likely cost more than another XF.

 

What would you estimate it costs in total in parts to do all this? And how many hours of labour? I could imagine this would be a great service for an Indy to offer (honestly maybe even a dealer if total labour hours not too crazy). Mine has been perfect but given age (2010) I would pay a reasonable amount to get the whole lot done...

 

I think it was about $1500 in parts, including the water pump. I went with all OEM Jag parts from discount suppliers like parts.com, ebay, and some dealer items. It would have been much more if I just walked up to the counter at the Jag dealer for everything.

My hours included cleaning the intake valves, which eats a lot of time. I did it over 2 days per XF, and it was somewhere between 10-15 hours total of pretty hard labor for each car.

Not a cheap job when done right. If I were taking it to a mechanic, I would be worried that they would skip steps on purpose to speed things up but still charge you. It's nearly impossible to see the rear crossover pipe without dismantling a lot of parts, and it's a real pain to do, so how are you going to know if they really replaced it? Or if they really bothered to clean the intake valves? It would take almost as much work to check their work than it would be to do the work yourself.

And you would be hard pressed to pin anything on them down the road if something fails that they didn't change. Mechanics can really increase their profits by cutting corners that customers can't check. I would set up inspection points along the process (examine the rear crossover off the car, examine the valves cleaned before reassembling engine, etc.)

 

This is super, super helpful. Thank you!

 

Out of curiosity, what made you decide to replace these parts?

 

Reading about others losing their engines for not replacing these parts.

 

Great job. I have the 2011 XJL 5.0 Non SC and I have heard this particular outlet pipe behind the engine breaches and leaks and notorius on these cars and low and behold I think I am having that problem losing a little coolant now as nothing is leaking from up front. Would you happen to know if this is the same exact procedure and setup is the same as my XJL. Hopefully all I have to do is remove the upper manifold and replace that pipe part myself in the back.. NO WAY taking it to the dealership..

 

Are you sure it's not the water pump itself. They are also a weak point.

 

Yes I hear water pumps are known for going out frequently on the XJL's but no leaks at the front of engine where the pump is and I cant see any leaks anywhere else so I'm assuming its the back pipes behind the engine, 4 people have brought this up so until I do more research I'm thinking that's what it is, besides I always smell coolant when i get out of the car

 

The rear crossover is just as much a liability as the front crossover pipe. A lot of people think if they replace the front crossover pipe, they are good to go. But the reality is there's a lot of other plastic to fail, and once one piece goes, you should know that others could go soon. That's why it's better to just do them all, and while you're doing them, take that opportunity to switch to waterless coolant to eliminate the pressure in the system that puts stress on the plastic and the seals for the water pump.

 

I know this is an old thread. I'm trying to figure out how you got to the bolts on the rear cross over pipe. Did you take the windshield wipers and the cowling off?

 

Yes, the cowls must come out and it is still very tight in there...

 

I ended up getting it without taking off the wiper and cowls. I could not for the life of me figure out how to get them apart. It was a TERRIBLE job without the access that the cowls would have afforded. haha

 

Would you know the part number of name of these 2 components on a Jaguar XF 2012. I need to replace these according to my mechanic. Thanks

 

Are you pointing to the two circular objects? If so I'm pretty sure those are part of the valve cover.

 

They are the PCV (Positive Crankcase Ventilation) valves.

 

Using 1/4 inch ratchet with spinning handle is the key Thanks

 

Love this thread!

 

hey my 2011 lost coolant but didnt run hot it's all over the engine before it happen i was smelling coolant idk wat it could be

 

What was the ratchet that you used