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Old 01-17-2009, 06:22 PM   #1
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carbon build up on nozzle


I have a 16 year old Beckett oil burner. I have the problem of reocurring carbon build up around the nozzle tip and igniters. This problem causes the furnace to "trip" and cleaning of the nozzle and igniters is required to get it to fire back up. I have replaced the nozzle (75/70B) but does not seem to effect this bulid up. I have also recently replaced the oil filters ; there are two for some reason, one below the outside tank and one right before the furnace.

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Old 01-17-2009, 06:28 PM   #2
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carbon build up on nozzle


Ayuh,... Sounds like it's running Rich,...

Call a Tech,+ have them meter the air/ fuel ratio...
Without the meter, it really can't be done properly...

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Old 01-17-2009, 06:51 PM   #3
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carbon build up on nozzle


Thanks for the advice
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Old 01-18-2009, 07:35 AM   #4
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carbon build up on nozzle


I agree with the other post but the adjustment must also be checked. Beckett calls this the "Z" dimension. If this problem has just occurred when the weather got really cold it could just be a cold oil issue.
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Old 01-18-2009, 12:04 PM   #5
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carbon build up on nozzle


It has happened with much more frequency with this bitter cold snap. It was also suggested to me that I might want to replace the oil pump screen. Any opinions? I do have an outside tank. Should I add any additives?
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Old 01-18-2009, 04:12 PM   #6
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carbon build up on nozzle


Ayuh,..

It happens more often because it's running more hours,... Running Rich for more hours...
With 2 filters I wouldn't be too worried about the screen,..
Your outside tank,... Do you buy #2 fuel, or #1 fuel,..??
#1 will not be a problem,..
If you have #2, call for a fill up with #1,...
That'll do more than any Additives you can buy...

It Still won't fix the fact that the burner is running Too Rich...
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Old 01-19-2009, 01:56 AM   #7
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carbon build up on nozzle


are you replaceing the nozzle with the same one you took out or did you confirm from the rating plate that the correct nozzle was installedin the first place just something else to check
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Old 01-20-2009, 07:59 PM   #8
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carbon build up on nozzle


I agree with Kennzz05, flame impingement could occur with the wrong nozzle. Always follow the rating plate. A .75 nozzle should roughly have your air open, somewheres between quarter and halfway open. if yours is open fully call a burner tech to set the air up for you.
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Old 01-20-2009, 08:02 PM   #9
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carbon build up on nozzle


Call a tech. We used to set them by sighting a orange tip to the flame, but found nothing beats using a meter to set it.

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