Time to look at your problem from a different direction
Why was your air conditioner replaced?
I ask because our generator, shore power, air was acting just like yours.
Everything worked in any campground.
Everything
but air worked on gen.
Many tests and a lot of forum searches gave me several things to try.
1. Run seafoam in the mh gas tank to clean the gen carb = helped a little gen would keep running when air started, 2 or 3 times out of a dozen tests.
2. Replace gen carb = total failure, gen would barely run but not good enough to make any elec
3. Replace the start capacitor with a hard start capacitor = success
no more gen/air problems.
Here are some threads that will keep you busy
https://www.thorforums.com/forums/f1...ator-8140.html
https://www.thorforums.com/forums/f2...pp6-21367.html
The capacitor I got.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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