XK8 / XKR ( X100 ) 1996 - 2006

Coolant hose leak

Old 03-11-2019, 03:16 PM
Senior Member
Thread Starter
Join Date: Nov 2011
Location: Stamford CT USA
Posts: 656
Received 89 Likes on 74 Posts
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.
Old 03-11-2019, 03:40 PM
michaelh's Avatar
Veteran Member
Join Date: Apr 2014
Location: Jersey, Channel Islands
Posts: 1,848
Received 620 Likes on 497 Posts

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.
The following users liked this post:
Stamford (03-11-2019)
Old 03-11-2019, 04:37 PM
Senior Member
Thread Starter
Join Date: Nov 2011
Location: Stamford CT USA
Posts: 656
Received 89 Likes on 74 Posts

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...
Old 03-11-2019, 06:53 PM
kstevusa's Avatar
Senior Member
Join Date: Oct 2014
Location: Middle Tn. near Hsv. Al
Posts: 400
Received 148 Likes on 89 Posts

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. :-)
Old 03-12-2019, 08:40 AM
fmertz's Avatar
Veteran Member
Join Date: Nov 2014
Location: Eastern USA
Posts: 1,650
Received 763 Likes on 596 Posts

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.
Related Topics
Thread Starter
Last Post
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
11-07-2016 03:24 PM
XK / XKR ( X150 )
08-11-2013 05:04 PM
Michael Star
S-Type / S type R Supercharged V8 ( X200 )
01-30-2013 09:31 PM
S-Type / S type R Supercharged V8 ( X200 )
05-13-2012 09:05 AM
XK8 / XKR ( X100 )
01-26-2012 04:02 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Search this Thread
Quick Reply: Coolant hose leak

Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: