Hey guys, I just bought a pressure washer with a Honda GX390 and I’m having trouble getting it to stay running. It will idle at the lowest throttle for a minute or two and and start to sputter and will cut off. It also has a really hard time when the throttle is increased and it cuts off shortly after it’s throttled up. I have replaced the carburetor, spark plug, and changed all of the oil. Any help would be appreciated.