The two low numbers in the middle point to either a crack between the two cylinder walls, some where up in the head or a blown head gasket! If it were valves or a ring issue it wold normally be only one cylinder not two next to each other. But pulling the head is really the only way to see.

Not sure about Oz, but the head gasket were a recall issue in Canada, I'm on my third atm! So I would place money on that!


This is a pic of what a (non Sportage) head gasket looks like when it fails between two cylinders, it will give simular pressure reading to which you got! It was caused by a cheap made in China head gasket, was supossed to be alloy and asbestos, turned out to be made of cardboard. I replaced it with a solid copper one!


[img]http://www.mgexperience.net/phorum/file.php?1,file=10860[/img]