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Ernie Bilko Ernie Bilko is offline
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Default Black smoke and soot from Oil fired boiler flue

has been producing a lot of smoke and soot when it runs, now it has
started cutting out - no doubt the photocell is filthy. I was about to
get it serviced anyway but as it has been running fine for 11 years
with just a regular service I was wonder what would have caused it to
burn this way. Why is it producing such muck and what is likely to be
needed to fix it.

Thanks