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 from left bank gets fouled and is wet with gas. I take it out and clean it, or install a new one, it runs great initially but turn on the a/c and the gen runs on 1 cylinder. I can't see how it could be anything wrong with the carb. So I'm asking for opinions, could it be a burnt valve? could it be a coil on it's last legs?
pulling the plugs and checking spark, they both look nearly equal, maybe the left problem plug has a slightly weaker spark. so I'm thinking it could be a weak coil.
Anyone know how tough it is to replace a coil on this model?
take the load off it runs fine.. spark plug from left bank gets fouled and is wet with gas. I take it out and clean it, or install a new one, it runs great initially but turn on the a/c and the gen runs on 1 cylinder. I can't see how it could be anything wrong with the carb. So I'm asking for opinions, could it be a burnt valve? could it be a coil on it's last legs?
pulling the plugs and checking spark, they both look nearly equal, maybe the left problem plug has a slightly weaker spark. so I'm thinking it could be a weak coil.
Anyone know how tough it is to replace a coil on this model?
