Just been down to the garage who are doing an oil pump gasket on my 2.0L zetec, and they have just shown me that when the sump plug is undone, it pisses out emulsified oil. Apparently, it let about 4 litres of water out before it mixed with the oil .

They say this can be one of two things, either the headgasket has gone or there is a crack in the block. Im hoping it is the headgasket obviously .

How hard is a HG to do on a Zetec? I put the engine etc in myself, they only have the car as i dont have time to fix it at the moment, im quite handy with the spanners.

Anyone got a quick guide laying about?

Cheers