Onan gen set?
#1
10-18-2018, 06:27 PM
#3
10-18-2018, 06:43 PM
#4
10-18-2018, 09:36 PM
Lead Driver
#6
10-19-2018, 06:47 AM
Lead Driver
When you press the “PRIME” button before starting the genny, does the light next to the switch light up, indicating that the electric fuel pump is running? If so, that same light should blink a series of blinks indicating the code.
Mine is carbed, 2013 model and if it shuts down the light next to the start-stop button will blink the code indicating the reason for the shut down.
last summer in 100*F heat, I was running both AC units and the genny would run for like 30 minutes, then just shut down. The blinking code indicated “Shut down without operator command” (from the troubleshooting page in the manual). I concluded that it was vaporlocking with that much load on it; shut one AC unit off and it ran fine.
Mine is carbed, 2013 model and if it shuts down the light next to the start-stop button will blink the code indicating the reason for the shut down.
last summer in 100*F heat, I was running both AC units and the genny would run for like 30 minutes, then just shut down. The blinking code indicated “Shut down without operator command” (from the troubleshooting page in the manual). I concluded that it was vaporlocking with that much load on it; shut one AC unit off and it ran fine.
#7
10-19-2018, 10:21 AM
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#8
10-20-2018, 06:42 PM
#9
10-20-2018, 10:02 PM
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#10
10-21-2018, 09:24 AM
Lead Driver
i found out the hard way that one needs to run the genny’s about once monthly to keep the carb operating. They don’t like stale gas, and there are no re-build kits for the carb......just new carburetors at $250-300!!!! Even with Sta-bil in the gas.
#11
10-21-2018, 05:33 PM
#13
10-22-2018, 05:46 AM
#14
10-22-2018, 11:46 AM
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My Onan 5.5 has 700+ hours on it and I believe the pump is the original. At the very least, it's OEM. I know this only because I had to look at it carefully to see if there was a filter on the pump end of the fuel line. My pump is located right next to the fuel tank which is at the back of the trailer while the generator is at the front of the trailer. There is no filter at the pump end. Apparently, Onan may have had two filters in the system at some point and deprecated one of the filter locations. There's only one now and it is right at the carburetor on mine. What worries me is the the pump is mounted right behind the wheel well (rearward of the wheel well, not inboard). If the tire lets loose the pump is going to get it. 
#15
10-22-2018, 07:53 PM