85 caprice. oil shoots from valve cover tube, wondering if its blown head gaskets, bluish gray smoke comes from exhaust. I was told it sounded like it had blow-by, but i changed the spark plugs and there wasnt any oil on them, if it had blow-by there would have been oil on spark plugs right? i was told to stand behind the car and see if the smoke smells like antifreeze, and if it did, it was head gaskets?? HELP!!!

Blow by is just exhaust fumes coming from the crank case. You also said you had oil shooting from a hose coming out of the valve cover. It sounds like you have some clogged oil return ducts. This results in oil building up under the valve cover, and as pressure increases it comes out of any openings it can find.