1993 subaru legacy

Before or after the white smoke showed up?

Which vents? White smoke from the exhaust _usually_ means a bad head gasket(s). White smoke (steam ???) from the interior vents would mean a leak in the heater core. Steam from under the hood means an external coolant leak somewhere, or perhaps an overflow. Chronic coolant overflow and subsequent overheating is probably a head gasket leak. Coolant leaks to the outside world are addressed by identifying the leak and tightening/replacing the suspect components.

ByeBye! S.

Steve Jernigan KG0MB Laboratory Manager Microelectronics Research University of Colorado (719) 262-3101