hi, we have a 2004 citroen c8 2.2 petrol and it is showing signs that the head gasket is on its way out, the car is giving off a bit of blue smoke, and if you go back to the car maybe after an hour and remove the cap from the expansion tank it is still pressurised,could anyone tell me if the engine needs to be removed to change the head gasket on this model?

if the engine needs to be removed it will be covered under warrenty,