Sounds like a problem with the gas tank pick up for the generator. I’m guessing that you’re pretty level when running the generator while stationary. Maybe try parking at a moderate downhill angle and run the generator and if all is fine, try parking uphill and see what happens. Other possibility is that wiggly wires are causing a ground issue. Usually, under coach wiring is a mess.
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Steve & Myra (Frodo13056)
2019 Jayco Greyhawk 30X
2018 Jeep Wrangler JKU
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