The saga continues. Had a Tech look at the Onan in Tucson. He was reluctant to change the fuel pump because the dang genset would run forever when he was there and he prides himself on not being a parts swapper. He changed the oil and all filters and checked cooling and it ran fine.
An hour out of Tucson it quit just like before. Same codes. Yesterday I changed the fuel pump and it ran fine. Today we hit the road and it stopped, just like before, after about 30 min.
To recap: has a new carb and has run with it just fine; new air and fuel filters; new fuel pump; full tank of gas and has done the same thing on several different tanks of gas; altitude adjustment is proper.
Ideas?