You can. You will need to get a threaded fitting that will screw into your spark plug opening and use an air compressor w a regulator and hose to the fitting to get the cylinders under air pressure to hold the valve from falling into the cylinder. Depending on the motor you have, if its a 4G63, you will need a custom valve spring compressor and not your ordinary one from an auto parts place. I would recommend thinking about getting your hands on that first.