| Author |
Message |
Duane Bratvold (Connieandduane)
Registered Member
Username: Connieandduane
Post Number: 27
Registered: 10-2006
Posted From: 205.242.83.12
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 10:27 am: | |
Came back from my trip and started to figure out why the Webasto quit. Took it apart, cleaned everything, put it back together and it fired up. After running about 10 minutes it started pouring out black smoke. It kind of looked like a truck under a heavy load. Then it shut off and I have not been able to get it to run. My question is, would the smoke be caused by a plugging fuel jet? I did notice when I had it apart that the flame detector was very dirty. Any help would be appreciated. |
R.C.Bishop (Chuckllb)
Registered Member
Username: Chuckllb
Post Number: 51
Registered: 7-2006
Posted From: 4.240.213.140
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 10:31 am: | |
Talk with Vehicle Systems or Sure Marine...see archives for more info.
FWIW
RCB
64 Crown Supercoach (HWC) |
paul berzins (Berzins)
Registered Member
Username: Berzins
Post Number: 1
Registered: 10-2006
Posted From: 209.240.206.207
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 4:40 pm: | |
black smoke should be a sign of excessive fuel. if your injector nozzle is spraying a stream of fuel it wont light fuel needs to be atomized. i would recommend replacing the injector they cost about 12 bucks. |
William Sloan (Ole_timer)
Registered Member
Username: Ole_timer
Post Number: 4
Registered: 9-2006
Posted From: 66.188.54.45
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 7:47 pm: | |
Hi Duane
It could be no air. Ck. the air inlet for junk in there or the the inlet could be loose and it turned it self closed.Is the blower running?.
Good luck
Ole Bill |
david anderson (Davidanderson)
Registered Member
Username: Davidanderson
Post Number: 191
Registered: 2-2004
Posted From: 66.90.203.131
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 8:01 pm: | |
Sounds like the nozzle plugged. My DB 2010 uses a .35 nozzle at 60 degree spray. Don't touch the tip with your hands when installing. Clean the burner chamber and water jacket area really good before buttoning the furnace up. The burner chamber pulls straight out to access the water jacket. Brush out the soot and clean it all up.
Like Ole Bill asked, make sure the blower is running.
David |
Tom Caffrey (Pvcces)
Registered Member
Username: Pvcces
Post Number: 1029
Registered: 5-2001
Posted From: 65.74.69.234
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 8:55 pm: | |
Funny thing about burner nozzles; when they get plugged, they put out MORE fuel. When I first got into burner service, I was very puzzled by this.
What it comes down to is that the oil spins inside the nozzle fast enough to be just a film of oil lining the hole in the nozzle. The spin has the effect of limiting the flow. It also flings the oil off in a fine mist.
Anything, like low temperature oil or a particle of dirt in the spinner area reduces the spin and increases the flow, unless the nozzle is solidly plugged.
This is why I always use one line between the tank and the burner. It helps keep the oil in the nozzle warm, near the 80 degrees that the nozzle is designed for. Some people wrap the copper fuel line around a warm pipe or the water leg of a boiler for the same reason.
Sometimes, one of the bits of porous bronze that the nozzle filter is made of will break free and lodge in the spinner, drastically increasing the fuel output.
It's generally best to use the recommended brand, pattern and angle of spray when replacing a nozzle in one of these very small burners.
For what it's worth.
Tom Caffrey PD4106-2576
Suncatcher
Ketchikan, Alaska |
Buswarrior (Buswarrior)
Registered Member
Username: Buswarrior
Post Number: 968
Registered: 12-2000
Posted From: 69.156.124.36
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 9:39 pm: | |
Also in the back to basics checklist:
Fuel is being filtered?
And as noted by David, pull the chamber apart.
The fins and places for air to flow were full of stuff in mine when I got it.
happy coaching!
buswarrior |
Richard Bowyer (Drivingmisslazy)
Registered Member
Username: Drivingmisslazy
Post Number: 1795
Registered: 1-2001
Posted From: 75.108.79.170
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 9:45 pm: | |
Here ia a link to another similar type problem:
http://www.busconversions.com/bbs/index.php?topic=2834.0
Richard |
Duane Bratvold (Connieandduane)
Registered Member
Username: Connieandduane
Post Number: 28
Registered: 10-2006
Posted From: 205.242.83.12
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, January 04, 2007 - 11:44 pm: | |
The air inlet has an adjustable opening. It appears to be about half way open. When looking inside the first time I had it open, for the most part looked fairly clean with a little soot. The nozzle looked clean also except for a little soot. I took the nozzle out and blew it out with air. Prior to taking it out I could not get the moter to run. I figured that the dirty flame detector probably cut the voltage to the blower. But after I put it back together it fired right up. I ordered a new nozzle today. I will try that. Thanks to everyone for your help. I will let you know. |
Bobofthenorth (Bobofthenorth)
Registered Member
Username: Bobofthenorth
Post Number: 139
Registered: 10-2004
Posted From: 142.165.179.130
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 06, 2007 - 3:38 pm: | |
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(Message edited by bobofthenorth on January 07, 2007) |