Elusive Coolant Leak
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I've had a coolant leak for a few months now, I've been working in SC and only home for a few days at a time, I could see the dried up coolant at the front of the engine but when I cleaned it up it was such a small leak that I couldn't locate it during my time at home.
So as I was heading back for the 4th I ordered a new thermostat and hose assembly from Nalleys. (Great service from Dan)
As I was pilling it apart it looked like the leak was coming where the small hose from the expansion tank connects into the plastic manifold,
![Name: DSC02709.jpg
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I started to think I had shelled out on the assembly when it was only a 3/8 hose leaking, then as I was working the part out the stub caught on something and whole piece popped off. It didn't take much force.
![Name: DSC02710.jpg
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So looks like I found the leak, there was no sign of any drips after two days. I'm just glad it didn't pop while my wife was driving.![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
Anyway it's something to check if you find a mystery leak in that area.
I'd advise picking a cooler day if you can.![Icon Bike](https://www.jaguarforums.com/forum/images/smilies/icon_bike.gif)
So as I was heading back for the 4th I ordered a new thermostat and hose assembly from Nalleys. (Great service from Dan)
As I was pilling it apart it looked like the leak was coming where the small hose from the expansion tank connects into the plastic manifold,
![Name: DSC02709.jpg
Views: 2229
Size: 40.7 KB](https://www.jaguarforums.com/forum/attachments/s-type-s-type-r-supercharged-v8-x200-15/171288d1501285917-elusive-coolant-leak-dsc02709.jpg)
I started to think I had shelled out on the assembly when it was only a 3/8 hose leaking, then as I was working the part out the stub caught on something and whole piece popped off. It didn't take much force.
![Name: DSC02710.jpg
Views: 970
Size: 49.3 KB](https://www.jaguarforums.com/forum/attachments/s-type-s-type-r-supercharged-v8-x200-15/171289d1501285917-elusive-coolant-leak-dsc02710.jpg)
So looks like I found the leak, there was no sign of any drips after two days. I'm just glad it didn't pop while my wife was driving.
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
Anyway it's something to check if you find a mystery leak in that area.
I'd advise picking a cooler day if you can.
![Icon Bike](https://www.jaguarforums.com/forum/images/smilies/icon_bike.gif)
![Name: Temp-1.jpg
Views: 430
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#2
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They use way too much plastic in the cooling systems these days. What a PITA.
#5
#6
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Thanks. Great info.
I noticed a similar issue on ours. There is a stain on the intake from coolant and the odor. Turned out both hoses connected to the TB were seeping. These are metal and I'm guessing some corrosion formed. I wiggled the hoses around and relocated the clamps for now. If I do a coolant flush, I'll do a more thorough inspection/repair.
I noticed a similar issue on ours. There is a stain on the intake from coolant and the odor. Turned out both hoses connected to the TB were seeping. These are metal and I'm guessing some corrosion formed. I wiggled the hoses around and relocated the clamps for now. If I do a coolant flush, I'll do a more thorough inspection/repair.
#7
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Mine broke in the same spot a couple days ago. I don't think it was leaking much, but I noticed some seepage and residue around that fitting. Wiggled it and it broke right off. It looks almost like that piece was glued in to begin with.
What did the part cost? I'm looking at the parts list and it looks like there's two versions, early ('00-'02?) and late ('03+). XR826065 and XR849445.
I don't get why the rubber hoses and the plastic pipe are sold as one unit with those permanently crimped-on clamps on the hoses.
In the interim, I tapped the hole for a 3/8" NPT 5/16" barbed fitting. Seems to be holding so far, but I don't trust it completely.
And I'm not too thrilled that the replacement part (if it's the same design) will also probably fail in the same manner.
What did the part cost? I'm looking at the parts list and it looks like there's two versions, early ('00-'02?) and late ('03+). XR826065 and XR849445.
I don't get why the rubber hoses and the plastic pipe are sold as one unit with those permanently crimped-on clamps on the hoses.
In the interim, I tapped the hole for a 3/8" NPT 5/16" barbed fitting. Seems to be holding so far, but I don't trust it completely.
And I'm not too thrilled that the replacement part (if it's the same design) will also probably fail in the same manner.
Last edited by Rooy; 07-11-2011 at 05:27 PM.
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#9
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Hey norri, did the $160 also include the thermostat housing/assembly? My local dealership only shows XR854920, which is the upper hose assembly plus the thermostat assembly for $250.
The part numbers I listed in my previous reply were for just the upper hose assembly, which appears to have been superseded by the new part # and assembly.
The part numbers I listed in my previous reply were for just the upper hose assembly, which appears to have been superseded by the new part # and assembly.
Last edited by Rooy; 07-11-2011 at 05:33 PM.
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