joe0508 wrote:
Would it be to any advantage to get one of those endoscope cameras and run it up in there and inspect it that way?Rather than pulling the whole unit.I can get an industrial type with a stiffer cord to do the turns in the combustion chamber.That should tell me whats in there and than run a small tube with vac to suck it out.
If you used a stick and then blew compressed air into the furnace, the pieces will be all over. Yes, you can get a camera and run it in there but I don't think you'll be able to vac it all out the exhaust vent.
I don't know how your furnace is mounted but most are about four screws through the base, maybe a ground lead, a gas line, any ducting, and the intake/exhaust piping. A guy fairly handy with tools should be able to get it out of it's location.
After you have it out, clean it all up and lubricate the blower motor, adjust the sparking device, clean the sail and check the switch for proper function. I'd also clean all the electrical connections to the circuit board and to the other terminations. Run the furnace on the bench and check operation. When you're done, you'll have peace of mind that the furnace is going to operate as it should.