Heading to a music festival next weekend in Georgia. Borrowing a friends generator so that we can run the AC if needed. Testing it out today and having some issues. The generator starts right up but will not power the AC. It is a Honda 3000. Based on everything I've read it should have no trouble. The air-conditioner works fine when plugged into a wall outlet in my garage which I assume is probably only 15 A. When I try to run the air conditioner off of the generator it runs for a few seconds and then the generator Bogs down like it's going to stall out. The generator has been sitting for a while with old gas. Does this sound like a carburetor problem? Would old/bad gas hinder the power output of the generator? Trying to understand why it would run off of a 15 or 20 amp wall outlet in my garage but not off of a 3000 W generator. Any advice? Thank you!