Well, obvious possibility is too much coolant.

Did you burb the system when you refilled it after emptying it?

Are you using an overflow bottle?

Probably all way too obvious, but all I can come up with right now.

Russ

Just start it up without the cap and run it for a short while, traped air should rise to the top of the rad. Or the problem could be a blown head gasket. Pull the spark plugs to check for this. If the plugs are wet with coolant there is your problem.

On other Ford's at least it helps to raise the front of the car while burping. Oh, turn the heater on MAX also. That burps the whole thing.

And yes to the spitting out if you fill it to the top without a expansion bottle. the actual fill mark is what, an inch or two below the top on the cars that didn't have the expansion stuff. I didn't know that until recently.

If you have the cap off the radiator if the fluid looks bubbly when it is moving there is air coming from somewhere. Probably a head gasket leak if you've burped it.

Russ