Start where you are. Are there any relatives who might have an address for your father? Have you contacted the emigration officials in Romania? They should have record of his departure from Romania and where he first went to in Canada. Have you contacted the Canadian Embassy in Romania?
Copetown is part of the City of Hamilton. You can use Canada411 (http://www.canada411.com) to see if he has a phone number or address.
If all the above fail, try hiring a "private detective" or research service.