Not sure if this is the right forum or not, but I'll start here. I have a Husky Pro air compressor. It's about 4 years old, 30 gallon upright with a 2 HP motor. It worked fine until recently. Now, it doesn't want to run right. It starts up really slow, almost as if it's cold outside and needs to warm up. However, even after a few seconds, it still runs slow. After 10-20 seconds of running really slow, then it speeds up to normal, maybe even a little faster than normal, then it slows waaaaaaay down again, and then speeds up again, and then slows down again, etc. Something starts to smell pretty warm within a minute or so, so I have to shut it down. The belt seems fine. The motor spins freely when there is no belt attached, and seems to run normally without the belt. I can manually turn the pulley on the compressor relatively easily. I hooked it up to my 5500 watt generator, and it does the same thing. There is plenty of oil in the compressor. Where do I go from here?