Quote:
Originally Posted by B.E. Coyote
I have an occasional coolant leak on my 04 4.7 I lose almost a 1/2 gallon per 1000 miles. The engine has never overheated.
It looks to be coming from behind the engine. I have found other threads that suggest the water pump or an o-ring on the tube above. They leak sending coolant to the back of the engine from on top of the engine.
I have seen it dripping from behind once or twice. It will drop a pint of coolant on the ground fairly quickly but now that I have pulled my skid plates I can not recreate it to confirm.
Would a pressure test show me the leak? I'm not sure how it would be different than just running the vehicle to operating temperature?
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I have heard that the coolant will glow under a UV light, not sure if that's true but worth trying to help locate the leak.
If you're able to try a UV light let us know if the coolant does indeed glow.