Gen issue?
Have the Onan 5500 in the coach, which we just recently purchased. Everything looks good and the PO did a real nice job of servicing all parts of this unit, including the gennie. Air filter is new and...
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Bad gas, or water in the gas. It takes only a drop of water to cause such sputtering. Add a winter gasoline addative to remove any water moisture. Hot days, cool nights, very possible condensation in the tank, and your gen is very sensitive.
