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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 ...
bobsallyh's avatar
bobsallyh
Explorer II
Jul 30, 2014
If you don't want to remove the choke pull off to test it, just put a piece of tubing on it and suck to see if it responds.

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