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West Central Iowa | I pulled the carb/mixer off and used carb cleaner and a blow gun on any open passageways and orifices. Not really anything that comes apart, so I could not do much other then that. I also checked/adjusted the valve lash.......and it still runs the same. Turn the tank valve almost off and it smooths right out. Also tried a regulator I could take a cap off and adjust the pressure. I adjusted it down to 10"WC (static) and still the same thing.
Looking like I am just going to start throwing parts/money at it. Searching online, it looks like a new carb/mixer is going to run $450.00 or more. A demand regulator would be $150.00-200.00. I can't see where there is anything wrong with the demand regulator, but you never know and it is cheaper, so maybe start there.
I hate just throwing parts at something and hoping it fixes it......but I don't know what else to try. Maybe on Monday I can get ahold of someone from Onan/Cummins and see if there are any TSB's or known problems that would cause this.
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Propane generator running rich??
