I have an investment property out in the country. It is an old house with an oil fired Heil Quaker furnace. Model # HB7410T2 MFG # 500058J67 Serial # 57759. It also says oil stove K891159. The fan kicks in and I have oil going to the burner control valve, but no oil is going past the valve. Any ideas on how old this thing is or how to go about repairing it?