Hello, I'm new.
Got a Fiesta Zetec S, 2007, and have noticed this issue. There was no service history with the car so it is possible it has not had a service in years...
I noticed the blowers were not working to temperature, if you put your hand by the blower you can feel it either hot or cold but you cant notice it in normal driving. Took it to a garage who thought it could be a head gasket, but performed a block test thing which came back negative so they think its less likely.
The antifreeze colour is nearly black.. The mechanic said it could just be down to adding in different anti-freeze that has caused gunk to build up and could stop the circulation properly and cause the blowers to not get to temperature. He said its possible that is why it is chucking the water up (which it only done when we undone the expansion tank bit).
It doesnt over heat, drove it 200 miles when it was 20C outside, crawling in traffic for over an hour by dartford!
He said the blowers have an electronic element which if the service doesnt sort should be my next avenue to look at.
45,000 miles 1.6 petrol.
Any help/ suggestions would be great!