I have a overheating problem.I replaced the radiator,water pump and thermostat

maybe air in cooling system.did someone bleed the air out?

Sounds like a head gasket is your problem. Does white smoke come out of the exhaust pipe, or any water dripping out of the pipe after running for awhile? Is your engine oil sort of milky in color or is there oil in your radiator??? If these are not present check for leaks from hoses or water pump..