A cylinder leakage test is used to tell if you have bad valves, requiring top end overhaul or bad rings. You need a special tool you might want to find someone near by that has one to borrow or just let a mechanic do it. It is done by bringing the piston up to TDC on the compression stroke and feeding compressed air into the cylinder. If air leaks out the intake you have a bad intake valve, same with the exhaust. If air pours out the breather then the rings are allowing compression past them. With the gauge for the test it will tell you a percent of leakage. Then you can check the spec's to see where you rate. If there is any leakage from the valves that is bad but there will always be some leakage arround the rings. Good luck.
Tim