XK8 / XKR ( X100 ) 1996 - 2006

Coolant hose leak

 
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Old 03-11-2019, 03:16 PM
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Default Coolant hose leak

Hi all,
As I parked the other day I noticed steam coming up from under the hood. On inspection I found the hose shown here has a small split in its side. You can see how it has sprayed coolant on the top right of the engine. I can't see how far down this hose goes. Is it possible to replace it without taking off half of the top end? Thanks!


Small split on side of this hose.
 
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Old 03-11-2019, 03:40 PM
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It's one of the valley hoses.

That one connects to a metal pipe which leads to the RHS Norma on the octopus. You might be able to pull a new one through from the rear with the old, but Murphy's law will likely prevail and the other one will start leaking soon. The intake has to come off to get to the front connection on that one


 

Last edited by michaelh; 03-11-2019 at 03:42 PM.
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Old 03-11-2019, 04:37 PM
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Thanks, Michael. That is what I was afraid would be the answer. Time to start reading up on the procedure and collecting the parts so I'll be ready once the weather warms up a bit. Still can't believe I live in a house with no garage. Next one...
 
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Old 03-11-2019, 06:53 PM
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That does appear to be one of the valley hoses on a 4.2L, the intake and T/B probably should be removed to ease access. There is also a black plastic piece (#8) that usually breaks that I would secure in advance also. The R&R requires an Intake gasket set and T/B gasket + L & R Valley hoses. The T/B removal is to ease the R&R of hoses. Be sure to have your serial # when you get the gaskets. The early 4.2L have different T/B gasket than later ones. This chore is probably in my future. :-)
 
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Old 03-12-2019, 08:40 AM
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Without meaning to put more on your plate, I did this job a few weeks back, and I wish I had done it with more time and more parts:

Get a brake booster throttle body adapter widget C2S15816, too. Not listed for the X100, but apparently usable anyway.

And whatever you need to disconnect the fuel line. There is a new-to-me funky tool for the connection at the rail and a more common tool to disconnect further upstream.

And might be a good time to replace both end gaskets for the plastic intake.

And a steel brush to clean up the EGR vomit inside the throttle elbow.

Might also be a good time to use a smoke machine an identify any leaks from the general area and try and plug those up during this job. The normal procedure calls for removing the plastic intake WITH short runners attached. There is of course an intake gasket between the runners and the heads that is easily replaced. There are posts on this forum detailing the other intake/runner interface with aging rubber gaskets that are apparently not available separately.

As you can see, this job makes you touch a number of things that all-in-all can use some maintenance/cleanup. You can make this job as deep as whatever time you can spare.

Best of luck, keep us posted.
 
 
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