its easy.. you could make a leak down gauge but without pics it would suck.. go to autozone and rent the tester.. make sure you have an aircompressor by the way.. you put number one cylinder on tdc and then you screw the leak down gauge into the spark plug galley.. then you take and hook up the other end to the aircompressor.. if its not exactly on tdc it will force the piston back down and you will have to do it over again.. then after that take your oil cap off and radiator cap off.. look for bubbles in the radiator.. listen for escaping air comming from the valve cover.. listen for air comming out of your intake and then listen for air comming out of your exhaust.. that will tell you either A. you have bad intake valves, B bad exhaust valves, C. bad valve seals. d. bad head/head gasket. repeat for each cylinder.. if I missed something let me know..