I have a wayne oil burner changed electrodes and nozzle furnace will not lite I was told you have to set the air flow how do you do that?

There is more to just setting the air flow to have a properly running oil burner. Just to set the air flow you need a special tool and more tools are need to check the pump pressure,ignition transformer and on and on. The electrodes have a special gap that is required also. I suggest you contact a service person who is familiar with oil burners and arrange for a ON Site Service call. The prie of the call will be well spent since a properly running oil burner will save you $$$ on your oil bill.

OR you can go to Wayne Industries and do a search.

http://www.waynecombustion.com/index.asp