well i've owned this rv for almost 5 months now and this generator has been a pain in the butt since the 2 month. its a onan 5500 generator. the first problem i had with it is that it had gas in the crank which the shop i work at repaired with a check valve and a tune up. 2nd problem was that the generator wouldn't hold a load even the microwave ended up just being the idle was too low which i should have realized from how quiet it was running. well now the 3rd problem happened this weekend the biggest problem of all 3 so far. morning started the generator was working fine had the front ac on traveling went smooth stopped once so i turned everything off started back up again generator started up fine and then i turned it off again at another stop went to go start it and it was spitting and popping like it was running on 1 cylinder also shooting black smoke. so i turned it off then i tried to start it again and it wouldn't start all i hear is the starting running when i press the start button. anyone know whats wrong and i think there is gas in the crank again. i smelled the oil and it smells like gas again.