OK, tank has plenty of oil. Filter changed after problem started. Sorry about the smart a-- reply. anyway, appears to be ok now. did some minor cleaning and cleaned up the connections on the igniter and looks like I got it. Now, where do I find replacement parts for a 40 plus year old M. Wards Signature model 55151A oil burning furnace? Anyone know? Going to do some maint. once warm weather kicks in in Va. Rob111