Posted 02-10-2004 at 05:32:06
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Well, my problem with the furnace cutting off at night got worse. I cleaned thermostat, all the electrical connections everywhere, the points in the primary control everything. I stubbornly resisted changing the oil filter and nozzle because I'd done that just 3 tankfuls ago.
Anyway, the problem got worse and worse. Furnace wouldn't run very long without popping the reset button.
Talked to a friend of mine who is a retired master plumber who used to install the things. Turns out we have the same oil company, and his last load of oil was "bad." Well I checked the filter and it was covered in something that looked like snot...and the nozzle was partially plugged and so was the feed line. Apparently there was enough oil getting thru that the flame looked normal to my eye, but the furnace sensed it wasn't burning right and kept shutting down.
I changed filters and nozzle and added "fuel treatment" that's sort of like dry gas for fuel oil, and (knock wood) it is burning very normally now. Lesson for me is: don't assume the filter is good even if you just changed it. Been dealing with this oil company for 5 years, and my friend for about 30 and never had a bad load before.
anyway, take care,