Forum Discussion

jimdmorrison's avatar
jimdmorrison
Explorer
Jun 05, 2021

Generator gas overflow even after changing regulator

Replaced my generator with an onan qg 4000 gasoline generator. Gas is getting into the oil and into the air filter when it overflows. It pressurized the oil tank. Checked the fuel regulator and it was...
markchengr's avatar
markchengr
Explorer II
Jun 05, 2021
You're experiencing fuel dilution of the crankcase oil. Could be one or more broken rings or a cracked piston. Sounds like a factory defect. Have seen this on large engines. -Mark.

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