Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
Sounds like we may have a leaking head gaskets or possibly intercooler. We first need to pressure test the system then perform a combustion leak test which will detect exhaust gases in the cooling system. Another test that should be performed is a compression and leak down test to see if in fact it is low and leaking in the cooling system. Let me know.
What kind of tester did you use. We use the one that gobs onto the expansion tank to pressurize the complete system. Also are we sure that it is coolant coming out of the exhaust?
OK the coolant is either getting into the engine from the head gaskets or cylinder head or the intercooler as coolant runs through them. We should see the loss with a pressure tester. If we do then a cylinder leak down test needs to be performed. If there is a leak down then it is in the engine. If no leak down is present then I suspect the intercooler. Any recent work done to the vehicle.
On both sides of the supercharger are the intercooler. There are two so the likely hood of both being bad is slim. They have coolant hoses going to them to keep the air cool.
Let me know how you make out.