"webster72n" wrote in message
oups.com...
With my conventional, american standard oil burner for a hot water
furnace I am experiencing infrequent, delayed ignition.
At times it ignites properly and most of the time the ignition is more
or less delayed by 3 - 5 or even more seconds, resulting in fueloil
fumes residue.
All settings for the electrode are proper.
The nozzle is new and was installed without bare-hand touching.
Could the deminished quality of the oil have anything to do with it, or
is the cause to be found somewhere else?
A positive answer will be very much appreciated.
Thank you.


From your use of the term hot water furnace you sound as though you are at
the other side of the pond. I do not know what you mean by an american
standard type oil burner but on the off-chance it might be a simple?
pressure jet burner you could check that the positional settings of the
electrodes in relation to the burner nozzle and the blast tube/swirl plate
are correct. Also the high tension connections and the ignition transformer.
Some newer burners use an electronic ignition generator (Danfoss EB1 or
equivalent) which can and does give intermittent problems when warm. Also
the sequence control unit and the solenoid valve/coil connections.
Have you checked the mechanical coupling between the motor and oil pump and
any filters or valves between the oil tank and the pump?
You may be better off asking the burner manufacturers for advice