Soot buildup in fire chamber

[LOCKr]

Hello, I just cleaned my Sears horizontal gas furnace for the second time.I have never had the black soot that I am getting now.I think it may be a moisture problem but I'm looking for some advice as to exactly what it may be and how to fix. Thanks.
46 readers and only one suggestion? Not that i doubt ya but would like to hear from someone else for confirmation

[mrcaptainbob]

Sounds like the burners need adjusting. May be getting the wrong air mixture.

[bbgru1]

thr first reply you got is most likly on the money but you could have a vent problem also the flue pipe might not be venting right have a chimney sweep company check that as well