I have a massive amount of coolant flowing out from underneath my car. You cannot see the leak from the top side of the car. I am going to put it in on a rack tomorrow and see if we can find the leak after removing the lower shield...... I just wanted to check and see if anyone has had this problem before or if there were any common problems that may cause this? I hear there are several heater lines that run on the back side of the motor and hope one is just leaking.

 

not to state the obvious but dont drive it! sorry i cant help more. Mine recently broke at the expansion tank when i was about to detail my car and squirted coolant everywhere, first time having to have it towed in (Prayerfully the last too!)

 

Where was the expansion tank located?

 

Expansion tank is where you fill it, and thermostat housing assembly are the 2 leakers that are most common. Exp tank hose barb breaks or cracks(small hose on top), and the t stat housing splits

 

Lol Brutal you never cease to amaze me with your knowledge or obscure faulty jaguar parts.. Funny enough, the barb on my expansion tank for the coolant bypass line cracked while I was doing the supercharger belt and its been giving me headaches ever since.. These damn Jags haha every time you touch them you take one step forward and two backwards.. or I should say when I touch them***..

 

The leak is definitely from the back side.... Anyone know what it could be? I talked to Jaguar and they said there are about 8 coolant lines that run in the back. Anyone know if one is common for leaking?

 

yeah the only common 1 thats on an R and leaks out the back is the coolant hoses under the super charger, they leak and run down the back of the block..Yes theyre no fun, You need to pressure test the system to isolate the leak at this point

 

I had it pressure tested. It looks like the aluminum housing under the supercharger? I hear it needs to come off to be replaced.... Ported S/C here I come!

 

Thats the spirit!!