"webster72n" wrote in message
oups.com...

John wrote:
"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


Thank you for your input, John. Which side of the pond do you mean?

Well we are in the UK since you have asked your question in the UK d-i-y
newsgroup g


I am right here in the good old USA, Pennsylvania, to be specific.
American Standard is the make of the burner, which you correctly
assumed to be a jet burner. All my positional settings are accurate.
Everything else seems to be in order.
I clean and service both, the burner and the furnace, quite
thoroughly.
I tried to get in touch with the manufacturer, but they were
incorporated by
another company and so far I was unsuccessful. Maybe on the internet
with a
little more research.
Thanks again.

I wonder if your oil pump is starting to wear and not giving constant
pressure allways. Try fitting a pressure gauge to the test point and
observing the pressure over a longish running period. What sort of
diminished oil quality were you referring to?