Im looking at buying a 1995 mustang
with a 5.0. The owner says he thinks it has a lower intake leak... But it sucks when u put ur hand on the valve cover opening. Idk if its the IAC i didnt check it. My father who is pretty good with engines wasnt sure if it was a stuck valve or maybe even a head gasket... I dont understand why its sucking air in help please i want this car and hope its something simple!