well i have alot of oil leaks everywhere. i just changed my valve cover gasket but still have more leaks. iv been stalling alot everytime i come to a stop and put it in nuetral my rpms just drops to like 300 and stalls on me most of the times. and i have white/blue smoke coming out of my exhaust ALOT of smoke..smells really bad.. the other day i was driving all of a sudden i see that my temp gauge was rising to HOT so i pulled over and saw that coolant was leaking. i checked my resivor and it was filled and im guessing it was overflowing the overflow valve and my no coolant in my rad. when i opened my rad cap nothing but smoke.. could this be a BHG?