EB11000 Honda generator,two cylinder,air cooled, 30 hrs.. Will run forever at low rpm, but dies after 10-15 minutes at high rpm. Will restart easily and run at low rpm but dies again shortly after going back to high. Sounds like a fuel flow problem when it dies. I have replaced plugs, removed and cleaned the carb, and traced out the fuel line and replaced the inline filters(one of which was installed backwards at the factory or retailer). I thought that was the problem, but alas no change. Any ideas?

Risthaven

 

float level.
partially clogged needle/seat.
bad oil alert sending unit.
bad fuel shut off solonoid at carb bowl ( if so equiped).
catbs are not that expensive if you want to try a new one.
sometimes the best of efforts cannot clean out a carb that has build up from storage time.

 

You can also try loosening the gas cap. If it keeps running with the gas cap loose, then it's a clogged vent in the cap

 

good point i overlooked. doesn't happen often but when it does it can drive you nuts.