when the furnace comes on sometimes it makes a popping sound blowing noise any answers
You have a dangerous situation there. That pow sound is gas igniting outside of the burners, called Delayed Ignition, caused probably by dirty burners, a heat exchanger problem, wrong gas pressure, bad valve . . something. Please have it looked at ASAP.
I suppose it is possible, however I would have it checked out by a professional.
popping noise , blowing noise could be a crack in your heat exchanger. You need to get that checked Big poof is a bit different then popping sounds. A poof would indicate a build up in gas before it lights. That is very dangerous. If its proofing I'd shut it down. I'd shut it down for a crack as well you need to have it checked either way. Anyone with headaches or feeling bad?
Sounds to me like you might have a cracked heat exchanger. Have the heat exchanger inspected. DO yourself a favor and go out and but a Carbon monoxide detector.
