We had eu1000i for 12-14 years, it always ran great. Got a larger trailer and in 2017 we were headed to the balloon fiesta in NM. Sold the 1000 and bought a eu2000i, it ran sometimes and missed and died other times. Used it this fall and same thing. Contacted Honda and they acknowledged a tech bulletin to replace the spark plug wire cap.
They sent me the part and I installed it, so far it seems to be running better. Dissected the old one and found the clip that connects to the plug was loose on the top of the plug, moved freely around and in and out on the plug.
Chris
