You're right about the manifold needing to come off. It would not otherwise be possible to reach the end of the hose at the bottom of the tower.

It's an interesting point that in moving the throttle body from the rear of the manifold on the 4.0 N/A to the front of the manifold on the 4.2 N/A, Jaguar changed manifold removal from a pig of a job to an absolute doddle. This move also simplified the hose routing and replaced the two coolant hoses in the valley with the 4.0 with the one hose in the valley on the 4.2.

However, and it's a big however, they replaced the two simple fixed bore valley hoses which rarely fail with a single hose which is smaller bore at one end than the other and so needs a step-down connector in the run of the hose which is a weak point and is very prone to failing ..... but, at least the manifold is easy to remove when the hose does fail.

Richard

 

I finished repairs and put the car back in service yesterday. A few minutes ago my daughter came in and asked if I was aware of an orange puddle under the car. 😪 That is discouraging.

 

If you still have the belly pan installed, that can soak up a LOT of fluid and slowly continue to drip for a very long time as it has a bunch of thick fabric as an insulation.
Maybe remove that thing and see if the car still pees on the ground. It'll give you a chance to clean up the pan also, I don't think the padding does much good anyway other than absorbing all the drippies.

 

It ended up not being something that I did. The Water pump has failed. For all I know , that's where this entire episode began.
Anyway it's a cheap and easy fix.