From cold my Corrado is fine. After it's warmed up, the problems start. Suddenly it loses power especially as I am moving from stationary up through 1st and 2nd. I will be accelerating and it will just jerk almost to a stop then the revs kick back in and it flies forward. After this has happened, the car is idling at 1500 - 2000 and is quite erratic. Often if I have warmed the car up, leave it then start it up after 30 mins there is absolutely no power. Foot down the revs very slowly build up with a popping noise coming from the engine, like it's clearing something out. Then after a few minutes of this it's ready to go. It was also losing water before the head gaskett was done last weekend but don't yet know if it still is or not. Things I have done so far: head gaskett, new radiator, water pump, fuel filter, oil filter, ISV, Distributer and cap. The cam chain and belt are fine, the engine looks immaculate. Does anyone have any ideas or please can someone point me to a similar link? Thanks.