I have a slow coolant leak on my 1998 Jaguar XJR that is getting faster. I have stopped driving the car before it gets any worse.

I believe i have found the leak. It is a plastic hose that has a washer on the end.

Here are two pictures in a google labum or they are also attachments to this post:
https://plus.google.com/photos/11398...15665376449841

The leak started i believe a year ago or more when i changed my tensioners, chains and water pump.

What is this hose called and what part are the washers? I want to order new washers.

 

It's one of the three bleed pipes. There is no washer. There are two o-rings on the internal plastic barrel that can sometimes be renewed ... if you don't end up shattering the connector getting it off.

I suggest flushing the crusty deposits off before attempting removal.

 

Ok. I think i may have found the entire tube. Have been unable to find the washers? I believe mine has only one white one. That may be the problem.

Jaguar PLASTIC BLEED HOSE FROM EXPANSION TANK TO THERMOSTAT HOUSING - MNC4582AC

 

I think the part # you show is for the non-supercharged engine. I ordered MNC4582BC to fit for my supercharged engine. This is also available from Jag bits and the good news is it is half the cost.
It would be best to confirm with them the correct part # before you order

On mine when I tried to remove the old tube part of it broke off and stayed inside the pipe. It took some work to pry it out so the new tube would fit.
After that no more leak