Onan-Orderable Cummins Onan 2.8 KV-FA/ 26100 RV generator set RV QG 2800 Logo
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Anonymous Posted on Jul 16, 2014

Troubleshooting onan repair

Wont stay running

1 Answer

Lawrence Oravetz

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  • Onan-Orderable Master 10,558 Answers
  • Posted on Jul 17, 2014
Lawrence Oravetz
Onan-Orderable Master
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Joined: Jul 28, 2008
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Check for a bad fuel pump and a clogged fuel filter.

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I have a onan microlight generator and won't get any fire. Can u tell me what I can do to try to fix it

go to https://www.flightsystems.com/
upper right hand corner there is a schedule question which is a free service from that company. Tom is an onan guru
Also go here to see the troubleshooting manual as well.
https://www.flightsystems.com/pdf/onan-rv-troubleshooting-guide.pdf
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the oil level sensor is a vital piece of equipment to save your engine when the oil level is too low
talk with generator repair shops as the sensor is generic and you may be able to get a good unit that fits another brand
you can test by bypassing it
however check the fuel flow through the metal tap as the corrode internally and block the flow of fuel--especially if you use e-mix fuel
the oil switch is screwed into the sump near the dipstick with 2 wires running back to a small box about the size of a match box
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Troubleshooting onan repair

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If the fuel filter is good and lines are good then it sounds like the fuel is making its way to the carb built trash is stopping the fuel from getting into the engine in order to run. Clean out the carb bowl and clean out the valve stem. I know on the Honda unit the valve stem is removed with the carb bowl then then with a striaght screw driver you can remove the Body once you drop the bowl down with the stem so to clean out the cyclinderical body. Good luck
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1. Does the generator stay running when you start it the first time?

2. What color is the housing on this generator? Try to get the model number and serial number.

If the genset is shutting down on the first try, then your probably not creating voltage. However, if this is an older unit then the genset may stay running although no voltage is created. Place a volt meter on the genset to check for output voltage.
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