I have neighbor who has an oil fired boiler that seems to have a few problems. I have tried to contact direct with no luck. His landlord has also tried. The boiler will let out clouds of black smoke and can be heard 2 doors down when in use. The landlord seems unable to contact there tennant to arrange repair and appears to have given up. I'm not sure how safe this boiler is but does not look or sound good. (should say boiler is in an outhouse) Where can I go with this as the landlord has been no help.
As far as I am aware, unlike gas, there isn't a legal requirement for a landlord to have a safety certificate for an oil-fired boiler. Thew 2 routes that I would follow are Oftec click here and your local council (environment health and building regs).
We had oil fired central heating in our last place and found it very reliable. But if the pump or regulator fail to operate correctly the system will over-fuel giving the symptoms you describe. There is also a chance the burner may give some problems also. The main results are excessive fuel consumption, noise and smell/pollution.
The problem should be relatively easy to diagnose but may be a bit expensive to fix. However a good engineer should be capable of testing and diagnosing any fault in very short order.
another friend put a solid fuelled AGA (I know, retro geek) into an old Victorian terraced villa. She vented it into the original shared chimney breast, and fired it up in the morning. It went nicely all day, heated up, baked some scones etc. Anyway, after six she noticed a commotion next door, emergency gas fitter, then the fire brigade, then the fire brigade at her door.
Apparently the old shared chimney, unused for decades was leaking fumes into next door setting the CO alarms off in a frenzy in every room.
The result of that was that she was ordered to shut the AGA down by the fire brigade and it wasn't allowed to be restarted until a flexible flue liner was fitted into the chimney and it was checked by a heating engineer and approved by the fire brigade.
So, I think the fire brigade will definitely take a faulty boiler seriously.