The 2008 york furnace was not working. The pressure switches were not closing. I cleaned out all tubing and areas water flows. I drilled hole going to high stage pressure switch larger. There were lots of moths in the drain above inducer motor. I cleaned that out. The flew going outside is 30 foot run in the ceiling. I am not sure if there is good slope there. Water may be coming back to fast to the furnace. We may need to fix the flew pipe. Inducer motor is loud. We may need to replace inducer motor. We may need to change Pressure switches. We will see if the cleaning today solved the problem. Ignitor is weak.