I got a 99 Voyager 2.0L in the UK, and recently, after havey revving, I get steam out from under the bonnet. After further investigation, and determined it not to be the Radiator cap, passing pressure to the expansion tank, I started to look more.

After giving the engine bay a bit of a clean, I noticed the steam was coming from the rear of the engine, behind the area where the coil pack bolts on. I don't think there is any heater pipes there, is there?

Help would be greatly appreciated!!