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jimhunter50's avatar
jimhunter50
Explorer
Nov 06, 2017

2007 Cummins Onan 5500 marquis gold gasoline generator

My 2007 Cummins Onan 5500 marquis gold gasoline generator runs for 2 minutes cold then stops once warm and choke opens, it will continue to run if I manually hold the choke closed. I have cleaned the ...
Toy Haulers
akcooper9's avatar
akcooper9
Explorer
Nov 06, 2017
lincster wrote:
If the carb sat with old gas in it for too long, carb is gummed up.
I have read very few cases of people being able to get their carbs cleaned out of the very small orifices well enough to get the genny to run.
Most have to buy a new carb.


This is due to the altitude screw. One needs to pop the black part off and then unscrew the screw and clean.

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