Start by setting the pump pressure to factory specs.
Stop all air/vacuum leaks between the air pump & nozzle
If the problem persists, replace the nozzle. Desa recommended annual replacement. Simply stated- the nozzle wears out to a point that the fuel is a spray rather than a fog and the fuel can't burn completely.
You don't state the type being burned. Diesel smells more than kerosene.
Answers & Comments
The fuel/air mixture is not right.
- Start by setting the pump pressure to factory specs.
- Stop all air/vacuum leaks between the air pump & nozzle
- If the problem persists, replace the nozzle. Desa recommended annual replacement. Simply stated- the nozzle wears out to a point that the fuel is a spray rather than a fog and the fuel can't burn completely.
- You don't state the type being burned. Diesel smells more than kerosene.