Don't pour that Muriatic acid in with the radiator hooked up in the car Drew (very bad). It's best to pull the radiator and lay it flat on the ground then pour it in and let it sit. You'll want to dilute it some at first, then richen the mixture until it starts to boil.
You don't see any milky sh!t in your overflow tank do you? Like a film on the wall of the tank? Mine had what appeared to be a head gasket failure (oil in the water), but the gaskets looked like new when I pulled them.
Check for a pinched overflow tube, get a new cap, check water pump rotation, and flush your radiator.
Once all that stuff is done we'll try something else. Call me... 765-569-6424
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Indiana Stangers Association
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[This message has been edited by 2FastLX (edited 03-18-2001).]