I have a 1990 Airco oil-hot air furnace and it died last night.?

Question

i went to hit the reset and i have no flame, it was just completey serviced to the tune of $220.00. It has run fine for a month and all the sudden last night did not fire and the cats eye shut it down.What are the possible adjutment that would make it not light up very intermittently.The pump screen cleaned and filter sock was changed, The nozzle was changed too {its a Delevan 1.00/80*]. Im a diesel mechanic on heavy trucks but have no experience on furnace air or gun settings. Im sure by the way this thing acts its most likely a adjustment or poss. a weak transformer. any help would be great. Thanx. FreezinginNYstate

Answer 1

Most common problem I've found is dirty nozzle. They need to be clean and free of water. Even though you replaced it,if you had fuel delivered and furnace was running it could pick up crud and plugged up.