My furnace stopped running. So we changed the oil filter,and the nozzle, & reset it. It ran fine for 5 days.?

Then it stopped running again. So we changed the nozzle a second time, running fine again for now. We noticed that the 5 day old nozzle looked carboned up. We also noticed sut in furnace. We have a oil burning forced hot air system....please HELP.....BurrrrrrrrMy furnace stopped running. So we changed the oil filter,and the nozzle, %26amp; reset it. It ran fine for 5 days.?
To rule out gunk or sediment from the tank clogging things up, just remove the feed line from the burner and hit the reset button. have a few coffee cans ready, b/c a steady stream of oil will be coming out. Catch the oil in the coffe can, and when the can is about half full or so, have a second person kill the power to the furnace. Check out the oil in the can. If its clean, you can move on to other things, and you can pour it back into the tank too.My furnace stopped running. So we changed the oil filter,and the nozzle, %26amp; reset it. It ran fine for 5 days.?
Have you ever had the tank checked for sediment? It sounds like you are having a problem keeping enough oil in the line to feed the needs of the furnace, Did you have a recent oil delivery? Some times the pressure of the oil coming in to an almost empty tank hits the bottom of the tank and shakes up the sediment and sludge. Check the filter again to see if it is clogged. Also try blowing the line out that feeds the furnace. Everything else seems to be working. I think it is just starving for the right amount of fuel.
I would say you need a professional oil repairman who has MANY YEARS of experience. If it ran for five days and in that short time became (unusually carboned?) up, then the settings are not correct, or perhaps the wrong nozzle size; or the fuel air combination; but whatever it is, it is serious enough that you need a pro. IF you have been paying a professional service, and they have not figured it out, then I would call them back and say you immediately want the most experience man to come, and you are upset this hasn't happened already. If that has already has been the case, I would consider maybe finding a more experienced company... or just talk with the guy you use now, and kindly ask for full explanatinos of what's going on, and decide for yourself if they are charging appropriately for the service rendered.