Hey Mate, Don't mean to be the bearer of any news but that sounds exactly what happened to my car about 3 months ago. I had exactly the same symptoms and came accross that I had split the block between 1 & 2 cylinder. I thought it was injectors, head gasket, fuel, spark plugs, coils, electrics and leads. But after all that I had the engine pulled apart and about a 6cm crack (length) going down the bore. It had managed to get oil in with the water which gives the blown head gasket scenario. Be careful with your Turbo. Once you get oil and water mixed and it goes through the lines to the turbo to cool it, the water evaporates in the hot turbo and fries the bearing in the turbo. That's what happened to me :( new turbo, new block. Nasty stuff. Sorry for the bad news I hope it's not that. Give me a PM and I can ring you and discuss more if you want