General Boards > Technical Support
White smoke common from my coach
George Frudakis:
Hi all, turn the thermostat to furnace heat. The electrical heat works well, if I leave it to long, I run out of hot water but the front of my coach blow but not hot air. So, I decided to turn on the diesel heater switch. I have never used it, and after a while white smoke was coming from the exhaust pipe. My neighbors thought the coach was on fire. Turn it off and just used electric heat. Is it normal to have white exhaust smoke coming out like a white could or will it change to regular diesel smoke after a while.
Steve Huber:
George,
An air leak can cause this condition. Other possible causes are electrodes out of alignment, a faulty fuel nozzle, low fuel pressure or bad fuel pump. If you haven't serviced the unit or used the diesel burner in quite some time I'd start with a new fuel filter as you may have gelling that is reducing fuel flow/pressure. Next on my list would be a new nozzle and electrode alignment.
Steve
Gene Obie:
You indicated you've never used your diesel heater so their could just have been moisture inside. Could the "white smoke" just have been steam? Any water leaking around your diesel heater?
David T. Richelderfer:
White smoke from a cold diesel engine is always seen when it is first started in the morning, especially on a very cold winter morning. After a minute or two, it will clear up as the engine and exhaust piping warm up. There's a problem when that white smoke doesn't show; that means the diesel didn't ignite.
Fred Brooks:
George,
When did you last service your Aqua-Hot diesel burner and combustion chamber?
Fred
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