Upgrades to make my generator quieter

A lot of the gen noise is coming from the valves, so keeping them adjusted helps a little bit. Insulating around the engine body to silence the valves helps more. So, especially if you have older Onans or similar then check the valves, it is easier than you think, but you need the feeler gauges sold at all autoparts stores

I had my gen mounted to the front of the truck in receiver hitch, so it was farther out and more isolated for vibrations.