Wood stove back puffing
I have a consolidated dutchman north west (something like that) wood stove Sequia model...probably 20 plus years old. It came with the house. We are using it to heat our home in spring and fall and boost the gas furnace in the winter using birchwood. Last year I ran it 24-7-250 days... Winter is long here in Alaska.
Its in the basement and the chimney is interior 2 1/2 stories up out the roof...its a double insulated 6" pipe.
I cleaned it and double checked and cleaned it again...yep its clean. But the stove seems to back puff often if that is the right word. Its like the draw is definitely pulling up the chimney but then it coughs a smoke puff through the joints in the chimney pipe (the first 4 feet is not double insulated) sending smoke into the room.
It easily can over heat and I have trouble slowing it down. I crank down all vents to the stove and then close the stove pipe dampner.
With in minutes is when the puffing starts...and goes off and on and I can not control it or even predict it very much.
What do you think?