Well, just my opinion...If you have a little time for labor, I would pull the pan, the intake, the heads, clean everything up, shoot some good old Marvel Mystery Oil in the cylinders, buy a complete gasket set and some sealer..Turn it over by hand to get everything lubed up, new plugs, fresh water and oil and a charged battery..I figure, if you still have a problem, you are only out the price of a gasket set and a few hours labor..But, at least you know you are starting from square one instead of pulling your hair out and fixing one problem at a time..Engines that sit for 6yrs, will fill up with moisture..Good luck, Steve
