Outdoor fireplace smoking!
Hi. Wife and I just put in a nice little outdoor patio fireplace. It's one of those reclaimed 70's style acorn jobs. The firebox is about 12" up from the pavers and a firegrate is used for the firewood. The whole unit was built under a large pergola (at its edge) and the stove pipe projects about 4' above the top wood member. It is insulated where it passes through the structure. The pipe is 8" and is about 8' in total length -- from the top of the fireplace to the 10" chimney cap. There is an inpipe/flue damper and it is always wide open.
However, every time we light the fire it burns hot then dies to a very low flame. By then the fireplace starts to smoke us out and the only way of keeping it from smoking is to keep restarting the fire with a bag of kindling. In other words keeping the flame hot. My feeling is the draft is insufficient.
Aside from extending the chimney to the flight paths of the local aircraft, how else can we improve the updrafting?
Here is a web site that shows the fireplace: http://wfiles.jetirc.net/the_fireplace