Quote:
Originally Posted by John Mercier
On a boiler?
If I am next to my boiler, I can hear the draft down the flue... but I don't think that it is forced.
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Right, which is why you often see flue dampeners to ease up on the draft.
But you probably hear that after it gets going.
I think there can be a bit of positive pressure at start. When Chimney and everything is cold. The furnace needs to ignite quick and burn as clean and complete as it can until a draft gets going as quick as possible. During that period it does not run good. The longer it's trying to push air up the chimney the more chance you'll get that initial smell.
It could be so many things that can cause a poor/slow ignite or a slow draft.
Electrodes worn
Electrodes not adjusted
Electrodes not clean
Electrodes insulator cracked or dirty
Cold Fuel
Chimney Damaged (water and ice in the chimney)
Nozzle wrong
Nozzle clogged
Oil pump not adjusted to the correct pressure
Oil pump worn
Wrong air intake
Obstruction in chamber
And probably a dozen more.
Note I didn't list pin holes in that flue pipe because those are rarely air tight nor do they need to be. In fact it might be doing you a favor if some smell is coming through that connector pipe because it's telling you, you have a bigger problem. If you make that air tight you might be just be masking a bigger problem.
Just call them again or find someone else is all you can do.
I would also get a chimney guy out since the Chimney is so old.