I have a 2000 Southwind on the F53 platform with a V10, when I tried to start it today the engine turned over but would not stay idling, I tried a couple times and it did the samething. This happened ...
I just went through a similar starting problem. However mine is a 1995 Chevy chassis. Would crank but not Start. When started would die. I found by feathering the gas pedal rapidly it would stay running, When warmed up ran perfect. It turned out to be low fuel pressure at start up. Replaced fuel pump no more problem. Hope this is not your problem, Expensive.