I strongly believe i have a bhg since white smoke, bad idle, and hard start are all a factor. Anywho when i bought the car the fellow said he had installed a new metal head gasket along with new turbo (he lied on that one) and all other needed gaskets for head job. I think he installed gasket wrong what could he have missed and or messed up on? Or could i have a cracked turbo housing? (since i heard and seen coolant bubbling out where the oil dipstick bolts up to)