There's an 06 XK8 for sale here locally and if the ad is to be believed, 666 were built.

https://minneapolis.craigslist.org/h...139134258.html

OK, not to get religious but if I'm running the line, I stop production @ 665 or 667

 

Christ guys. The models are released one MY earlier in UK.
I.e. XK150 4.2 was released in 2006 in UK and 2007 in USA
XK150 5.0 was released 2009 in UK and 2010 USA

 

Q & C is correct. According to Nigel Thorley there were 401 4.2 XKs produced in 2005 and 12 3.5L XKs produced in 2005. In the first full year of production, 2006, there were 14,050 4.2L XKs and XKRs produced.

 

​​​​​​​
Had time today to take inlet manifold off.Found the cause as to loss of coolant,it is the throttle body return hose Looks like it has exploded as a really big hole in it. Throttle body return hose.
Also note no valley pipes,just that one hose to allow the engine to be ruined.Very poorly engineered I.m.h.o.
​​​​​​​ Tommy.

 

That is interesting. I assume the port is there for commonality with the blower cars. On my son's '05 Lincoln LS with the 3.9L Jag V8 with the same basic layout the TB is plumbed from the T-stat area. We replaced the big angled piece of plastic tubing last week because it was cracked. Been chasing coolant leaks for the past 2-3 years because all the plastic parts seem to go at about the same time as the hoses did.

Putting it back together now? If not I'd cover those intake ports up before something falls into them.

 

Yes I will get them covered.Do you know what the best day is to cover them.Will not have time to reassemble for at least 2 weeks.<br />​​​​​​​ Tommy.

 

Just stuff paper towels into the eight manifold openings...

Maybe this is a good time to replace the black plastic fitting bolted to the top of the intake manifold? This is the fitting that the outlet pipe fits into. From your photos, it looks like you had replaced the outlet pipe but not that plastic piece that connects to the aluminum part of the intake manifold, since you have to remove the plastic portion of the manifold for access.

 

Hi Patrick
Thanks for the advice.I already have a new outlet pipe and will fit it on reassembling. Anything else you think I should replace while I have access? .
​​​​​​​ Tommy.

 

Hi Tommy,

How about the heater hoses?

I really appreciate your sharing those great photos with the group, and hope you find your engine was not permanently damaged by the failure of that throttle body hose.

I have 78K miles on my 2007. I replaced the outlet pipe incl the thermostat recently. There was no overheating warning, but I measured the temp (using a handheld instant read IR thermometer) at the radiator hose connected to the thermostat and it was around 210 degrees F. After replacing the outlet pipe the temp was around 185 degrees F.

One of the tabs that held the original thermostat to its housing had broken off, so I assume that thermostat was not able to fully open when it needed to.

All of the five hoses that connect to the outlet pipe seemed to be OK. At least they were pliable and showed no cracking when squeezed.

Now I am wondering whether I should proactively replace some of the other hoses...am not eager to have a cooling system failure considering the ambient air temp in the summer here in southern Arizona can get up to ~110 degrees F.

 

Ok Thanks for the advice.Like you I have inspected the other hoses and they seem to look fine to the eye.Wonder if I should replace the water pump?.This car seems to have hoses going in every direction possible!!!
​​​​​​​ Tommy.

 

Yes, I've been thinking about that as well, as the correct Jaguar pump is not very expensive. I looked at the pump while I was replacing the outlet pipe a few weekends ago, and did not see any coolant weeping down the front engine cover. So I decided the need was not urgent...

If you should decide to replace the pump, please post photos of that as well. I am interested to see what the impeller of a used pump looks like.

How many miles has your X150 logged?

 

Yes if I do replace the water pump will post up photos.In the UK they are £122 for genuine jag ones.Milage is 52000 miles which I consider as fairly low for this type of engine.
​​​​​​​ Tommy.

 

FYI, from parts.com website. Prices are in USD.

 

Not sure, is that for a genuine Jag one or an aftermarket one.After market ones are alot cheaper than proper Jag ones here in the UK.
Tommy.

 

parts.com is a US website covering numerous brands. The orders are fulfilled by dealerships associated with the brand.

Hence, an order placed on parts.com for Jaguar parts will be fulfilled by a Jaguar dealership. I've placed one order via that website so far, for the outlet pipe costing USD123 plus shipping. It came in Jaguar packaging and had the same markings as the original, and was fulfilled by a Texas Jaguar dealer.

 

If you do decide to replace the water pump, make sure you get the latest version. As I recall there have been two three different iterations.

 

Your reply makes sense,thanks for your help and positive coments.Tommy.

 

​​​​​​​Removed outlet pipe today,gives good access to waterpump and hoses.Tommy

 

Yep, it kind of sucks that the water pump itself is the lowest spot in the engine for the cooling circuit so you will spill about a gallon on the floor unless you slide a kiddie pool under the car.

Try to not get coolant on the belt as it makes them squeak. Loosen the pulley bolts before removing the belt and tighten them once it's back on so the belt holds the pulley from turning. If memory serves the pump was just four bolts. Loosen them and wait for the waterfall to stop once the seal breaks.

 

Tommy, did you notice any deterioration of the removed plastic parts? Was the removed outlet pipe original equipment or had it been previously changed?