(to above) er.................
see my guide
revving engine yes.....water pump will shift water around quickly which might help
running with coolant cap off....no.....coolant system runs under pressure and needs that pressure to release air locks. i know where your coming from as on my cvh fezza this was a good trick, if technically wrong.
iv found the best way on the zetec se is to let it run upto temp with coolant cap on, turn off, undo cap a little, which is technically wrong and can BURN YOU SEVERELY but you will see the pressure release drag air bubbles with it....clearing air locks. try this a few times & keep an eye on the coolant level for a few weeks while it settles undo normal driving.
its a funny system, even specialists in the midlands who supposedly use a vaccum system strugle and have given me my car back with more airlocks than coolant in.....!