Question about 2004 Lincoln LS
You need to find out if the leak is internal or external to the engine. There is a tool called a Radiator pressure checker and it works similar to a bicycle pump. Special fittings replace the radiator cap and you observe the pressure rating of the system when you add pressure.
If the leak is significant this test will spill the antifreeze from the leak. In difficult cases, an additive leak detection chemical can be added to detect a leak with an UV light.
If not successful you will need to pressurize the system and observe for pressure drop. This would mean the leak is internal like a bad head gasket. At best, you can diagnose which side (bank) of the engine needs to have its head gasket replaced by removing the spark plugs and cranking the engine to spray out the antifreeze from the problem cylinder. Again, a chemical dye and UV light would be helpful.
Posted on Jan 02, 2014
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Posted on Jan 02, 2017
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