Onan marquis gold 5500 surges
My onan that I just got with my used rv is having issues. It's an onan marquis gold 5500 model hijab with the old carburetor. It starts and idles fine, but when you put it under load it just sits and ...
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Normal with old fuel. Add double doses of fuel system cleaners in tank with fresh fuel. Run for a couple of hours, then shut down and let it cool. Double check oil level as well. After a couple of these cycles, it should run fine. Last year I added a double dose of STP gas cleaner and stabilizer. Months later it fired and ran smooth.
