Do you have a compression tester? I'd do a compression check.
How does the oil look, clean or milky?
Did you drain ALL the orange stuff before adding the green?? Did you flush your heater core and the block of all the orange stuff?? If the two mixed that muddy crap could be all through your system. If you only drained the radiator of the orange stuff, you only got 1/3 to 1/2 the orange stuff out...
Did you check the weep hole in the water pump under the pulley? Could be coolant from it being slung around.
