Generac Q550 running rough need help
our 1996 Generac air cooled 5500 watt v-twin is acting up. Basically the left cylinder isn't firing when a load is applied like an a/c being switched on. take the load off it runs fine.. spark plug...
Forum Discussion
I would gap the left plug slightly less than the right to verify. Maybe set the right at .030 and the left at .025 or what ever is less than called for. See if it runs better, worse, or no change. Running better could point to a weak spark, coil.
