2001 XJ8 Coolant
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The most likely culprits are the Norma connections between the 'octopus' hose and the heater hoses that run under the intake manifold. They drip onto the cats which is why you smell but don't see the leak.
Check your local auto supply stores for the loan of a pressure tester and use cold to find the leak. I bought a tester at Harbor Freight and have used it many times on my car and others.
If you haven't replaced the thermostat housing with a metal one that and the water pipe just under it should also be replaced. And how about the timing chains and tensioners? Jags can get expensive if you are unable to do repairs and replacements on your own.
Check your local auto supply stores for the loan of a pressure tester and use cold to find the leak. I bought a tester at Harbor Freight and have used it many times on my car and others.
If you haven't replaced the thermostat housing with a metal one that and the water pipe just under it should also be replaced. And how about the timing chains and tensioners? Jags can get expensive if you are unable to do repairs and replacements on your own.
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Another very likely suspect is the water pump. Once the seal begins to fail, it will typically only leak while the engine is running, and the radiator fans blow the coolant around and dissipate it so you don't see drips on the ground below the car. Look for dried coolant residue on the front of the engine below the pump. The Airtex AW4124 pump from Rock Auto is the same part the Jaguar dealership will sell you but at a fraction of the price (under $40.00).
To check for leaks of the heater hoses under the intake manifold that RJ mentioned, shine a flashlight down through the spaces between the intake runners and look for either wet coolant or dried coolant residue. It's easier to see if you do it in the dark.
Cheers,
Don
To check for leaks of the heater hoses under the intake manifold that RJ mentioned, shine a flashlight down through the spaces between the intake runners and look for either wet coolant or dried coolant residue. It's easier to see if you do it in the dark.
Cheers,
Don
Last edited by Don B; 01-15-2021 at 08:44 PM.
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