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Old 03-31-2020, 09:15 PM   #1
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Brand: Thor Motor Coach
Model: Vegas 24.1
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THOR #4469
Generator not starting 2017 Vegas 24.1

We've been starting our generator periodically throughout the winter, with no issues. We live in a coastal Oregon town where it doesn't get below freezing much. This time when I tried to start it, even with priming, the Generator turns over but immediately dies. I've tried this several times now with the same results. Any idea next steps? Thanks in advance.
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Old 03-31-2020, 09:22 PM   #2
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Do you have more than 1/4 tank of fuel? The generator will not run if your fuel is below 1/4 tank.
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Old 03-31-2020, 09:37 PM   #3
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Thanks, the fuel level is exactly at 1/4 tank. We'll fill 'er up and see what happens. Appreciate the quick answer.
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Old 04-01-2020, 02:22 AM   #4
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THOR #4687
Just something else to check might be the oil level. If the oil level is low, the generator either won't start or die.
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Old 04-01-2020, 03:17 AM   #5
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2nd the 1/4 tank.
Suggest you fill that tank up to the top and add Seafoam. Itís not a good idea to store any vehicle without the tank being full and having a fuel preservative added. The tank not being full allows room for condensation which equates to water in the gas.
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Old 04-22-2020, 09:26 PM   #6
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Same issue with mine. Fuel tank is full and the oil was just changed at the dealership. Shows correct level. I don't want to do anything that invalidates warranty but happy to take any suggestions regarding general troubleshooting.
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Old 04-23-2020, 03:43 AM   #7
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THOR #17883
You say same issues? It will start then die? Mine will do that from time to time. I just hit the prime button a little longer and she fires up and stays running.
Since you have a full tank of fuel and the oil was recently changed, it might be overfilled. If I remember correctly the oil level needs to be a little below the full mark as this can cause a no run situation.
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Old 04-23-2020, 04:20 AM   #8
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On our Jayco Alante, we were having trouble keeping the generator running after about 20 min, when I changed the oil in the generator, I didn't fill to the full line, and that solved our problem of shutting down after a few minutes.
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Old 04-23-2020, 01:05 PM   #9
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I don't see a primer button on the unit. Mine starts via the cabin switch, the touch screen, or directly via the toggle switch on it. I started it yesterday via the direct switch and after it shut down it made a loud buzzing sound for several minutes. I think I'll bring it in and let the dealership deal with it.
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Old 04-23-2020, 01:29 PM   #10
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Quote:
Originally Posted by AAL787 View Post
I don't see a primer button on the unit. Mine starts via the cabin switch, the touch screen, or directly via the toggle switch on it. I started it yesterday via the direct switch and after it shut down it made a loud buzzing sound for several minutes. I think I'll bring it in and let the dealership deal with it.
To prime you hold the start/stop rocker on "Stop" until the LED lights then hold for 15-30 seconds (you should hear the fuel pump running--I can on our 24.1).

Where are you in Michigan? There is an Onan/Cummins shop on Grand River in New Hudson (just west of General RV's main office). I would take it there (especially since any RV dealer will just take it to Onan/Cummins anyway).

Back in 2014 they built a bunch of the genny's with bad fuel pumps--ours was one. I took our Axis to that shop in New Hudson and they had the fuel pump replaced within an hour.
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Old 04-23-2020, 05:02 PM   #11
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Thanks for the tip on priming. I'll give it another shot. I'm in Portage, MI on the west side of the state. I have an appointment with the dealership next week so if the problem doesn't resolve I'll try Cummins.
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