noswad wrote:
I turned the generator off and the check engine light would not come on.
There weren't many comments about this symptom, which seems pretty relevant. It's worth checking how the gen (I assume it's diesel) is connected to the fuel line/fuel tank. I've seen them wired into a "T" in the main feed line. This reduces fuel pressure when the gen is running and can cause air to get pulled into the line.
The gen should be connected to a separate feed from the tank - not the same feed that supplies the engine. This would be unusual(a "T" install), but occasionally it's done if the second tank feed has been damaged, or if multiple fuel tanks are installed and it's not necessary to prevent the gen from pulling all the fuel from the aux tank, which would leave you stranded if all fuel was pulled by the gen from a single main tank.