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JSS1439's avatar
JSS1439
Explorer
Jul 29, 2014

Cummins Onan Generator running ruff at start up

Hi all, I have a Cummins Onan 5500 generator model HGJAB Spec E that on start up runs very ruff and smokes like crazy. It will stall out and give a 37 code about 3-4 times before eventually smoothing ...
JSS1439's avatar
JSS1439
Explorer
Jul 30, 2014
Thanks for the replies. So I take it that the "choke pull off" we're talking about is the same as the vacuum breaker assembly that's located on the side of the carb that controls the choke, correct?

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