89/85 hybrid won't start every other day
I have an 89 vn750 but am running an 85 700 engine in it. took it out backroading friday. ran like a scalded dog for 15-20 minutes then started bogging down a little. came home and parked it. went out saturday to look it over and it wouldn't start or even hit. checked gas 1/2 tank, oil, water all good. moved on to yard work for the day. sunday morning fired up after maybe 3 turns and leveled out and ran great. any ideas whats up? this evening it wouldn't hit a lick.