If a valve is stuck open what is the best way to loosen it? The car sat for a year, give or take a few months. The valves that are stuck are 1,3,and 4. Thanks Bob
you can try trans fluid,it will help losen carbon.or pull the heads off and disassemble.but i would try the trans fluid first ,let it sit and work the valve manually.
sorry,you want it toget in to the guides to free them up.if you have small bottle or somethingthat you can pour it diectly onto the stems.that way it will wick down the guides.you may find that you need valve seals any way.could be cause of your headache?good luck.tim