How hard is it to replace the head gasket on a 1986 CRX HF? I've never done a Honda before. I did replace a head gasket last year on my 1986 Plymouth Reliant and it wasn't too hard to do. The Crx loses fluid from the radiator and builds up pressure in the radiator really quick. White vapor comes out of the tailpipe after running for a while and shutting it off. Dipstick looks fine and the car starts right up every time and doesn't miss. Use Bar's stop leak or replace head gasket? All suggestions welcomed and appreciated. Gary Vancouver,Wa.