its a ryan. the kind you mix oil and gas. ran out of the right oil so mixed 10w40 with it and ran it all last season that way with the choke wide open so it would stall. started up this year but wouldnt stay running dumped out the oil and tried to run it with straight gas. still wont stay running. changed spark plug. wont start at all now. any thought? i just put the right oil in it but dont remember the mix so took a guess.