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I put a pressure tester on and was expecting to see a bad water pump seal because there appeared to be some coolant in the water pump pulley. But... with the pressure tester on, there is coolant running out from what appears to be the corner of the rear cylinder head on the passenger side, but a little lower. Could this be from a freeze plug on the head, or the timing cover or something behind the alternator bracket? I doesn't look like it's coming from the head gasket, but very close. I've been looking at it with a mirror.

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Location: Oregon
I would take a good look at your intake manifold where it meets the head and the block. Common failure point.

you will have to take a good look with a mirror or something to see if the leak starts from the intake or if it comes from the head gasket.

head gasket

timing cover gasket

but you need to verify where the leak comes from.

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