No---------pressurizing a cylinder isn't a good subsitute for a cylinder leakage test-----a cylinder leakage test puts in a smaller, well regulated flow/pressure so the flow can be measured as a percentage AND let you listen? for where it is going--just hooking an unregulated flow/pressure to the cylinder with a hose will rotate the motor by blowing the piston down away from tdc and the air will blow out exhaust or intake because of valve opening----------Its not accurate in anyway-----