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10-08-2015, 02:42 PM
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#1
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Junior Member
Brand: Thor Motor Coach
State: Illinois
Posts: 4
THOR #3009
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Thor Axis Generator won't start
2014 Thor Axis . generator worked fine at home. Now we are on the road and would like to use the AC and 110 outlets but the generator won't start. It turns over but won't catch. Have tried all the start buttons including the one on the generator itself. Have tried with and without the motor running. Have a full tank of gas. Any suggestions?
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10-08-2015, 02:47 PM
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#2
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Senior Member
Brand: Thor Motor Coach
State: Florida
Posts: 1,241
THOR #1249
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Just a wag, but at the gen., I think there is a priming button you may want to try if not already. Also, check the fuel filter for clogging.
Good luck.
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Former owner of 2015 Thor Vegas 24.1 in Ocala
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10-08-2015, 03:00 PM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: Axis 24.1
State: Georgia
Posts: 844
THOR #1123
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I would try priming it at the start switch as mcr1010 suggested if you haven't already. Mine is a bit ornery to start unless I prime it a couple of times and hold the start button after it fires off until it gets running good.
You probably already know this, but just in case; hold the start button on the panel in the down position until the light comes on to prime it.
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10-08-2015, 03:02 PM
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#4
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Axis/Vegas Enthusiast
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,837
THOR #1150
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To prime the generator: Hold the switch to the "Stop" position. The light should turn on after a few seconds. Hold for about 15 seconds. (If someone is near the generator they should hear the fuel pump running when you are doing this.)
Also note that Cummins shipped some genny's with bad fuel pumps for a while there. Ours had one: Was running fine on the road one day when it just up and quit. I couldn't get it running after that. The Cummins tech replaced the pump in about 10 minutes (funny he knew exactly what to do and had it all done quickly--before the paperwork could even be done).
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10-08-2015, 03:57 PM
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#5
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Junior Member
Brand: Thor Motor Coach
State: Illinois
Posts: 4
THOR #3009
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Nothing yet
Thanks for the suggestions. We had already tried priming at the generator with no luck but didn't know the secret of priming at the control panel so we tried that. No change. Sorry but no clue how to check for clogged fuel filter. Supposed to get to 105 degrees today so was hoping for a miracle.
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10-08-2015, 03:58 PM
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#6
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Junior Member
Brand: Thor Motor Coach
State: Illinois
Posts: 4
THOR #3009
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Oh, our generator is an Onan.
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10-08-2015, 04:23 PM
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#7
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Axis/Vegas Enthusiast
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,837
THOR #1150
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Onan is owned by Cummins.
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10-08-2015, 05:56 PM
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#8
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Senior Member
Brand: Thor Motor Coach
State: Florida
Posts: 1,241
THOR #1249
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[QUOTE=Snip. Sorry but no clue how to check for clogged fuel filter. Supposed to get to 105 degrees today so was hoping for a miracle.[/QUOTE]
Check your manual. The filter is buried in there out of site, but can be accessed. Trace the gas line back and you can find it. You may have to remove a plate, panel etc. to access it. Can't remember.....sorry.
I installed an easy to reach-see inline fuel filter for just that reason. Also installed an inline shut-off valve to run carb dry.
Good luck
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Former owner of 2015 Thor Vegas 24.1 in Ocala
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10-08-2015, 09:24 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Axis 25.1
State: Pennsylvania
Posts: 299
THOR #1503
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How much fuel is in your tank. The generator fuel pickup is set higher in the tank to prevent running the tank dry.
Bruce
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10-08-2015, 09:44 PM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: Tiffin Open Road 32SA
State: Colorado
Posts: 238
THOR #1147
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Ours is really hard to start, but so far it always works, eventually. The procedure I've developed is
1. Prime until the lite comes on.
2. Crank it for 10 to 20 seconds. It won't start.
3. Prime again.
4. Let it sit for a minute or two.
5. Hit the start switch. It will usually start this time. If not, repeat steps 3 through 5. I've never had to do ot more than twice.
Why does it work? No clue!
Regards,
Randy
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10-08-2015, 10:19 PM
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#11
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Junior Member
Brand: Thor Motor Coach
State: Illinois
Posts: 4
THOR #3009
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Thanks all. We'll try tonight when we stop for the night.
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10-08-2015, 11:41 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: 2015 vegas 24.1
State: Illinois
Posts: 180
THOR #1448
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We have better luck with the switch on the dash, rather than the switch by the door.
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10-09-2015, 02:21 AM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: 2023 Jayco Precept 31UL
State: Florida
Posts: 2,916
THOR #1589
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Quote:
Originally Posted by groswald
Ours is really hard to start, but so far it always works, eventually. The procedure I've developed is
1. Prime until the lite comes on.
2. Crank it for 10 to 20 seconds. It won't start.
3. Prime again.
4. Let it sit for a minute or two.
5. Hit the start switch. It will usually start this time. If not, repeat steps 3 through 5. I've never had to do ot more than twice.
Why does it work? No clue!
Regards,
Randy
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This works for us, too. And, like Bruce pointed out, it will not start or run if the gas is less than about 1/4.
Please report back when you figure it out!
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Life is better when you cry a little, laugh a lot, and are thankful for everything you've got!
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09-09-2020, 11:47 PM
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#14
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Member
Brand: Thor Motor Coach
State: Texas
Posts: 57
THOR #13374
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Generator on Thor 24.1 Axis 2014 Altitude sensitive?
We had a surprise Sept snowstorm in Colorado. The RV park, at 8200 feet, lost power, and since I was going to bed, I let it ride. With power restored the next morning, I discussed with other RVers, asking if anyone turned on their Onans, and learned there might be an adjustment necessary when at this altitude. Anyone else know anything about this?
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09-10-2020, 01:22 AM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: 2011 FW Hurricane 33T
State: England
Posts: 1,296
THOR #16471
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Quote:
Originally Posted by Jinx
We had a surprise Sept snowstorm in Colorado. The RV park, at 8200 feet, lost power, and since I was going to bed, I let it ride. With power restored the next morning, I discussed with other RVers, asking if anyone turned on their Onans, and learned there might be an adjustment necessary when at this altitude. Anyone else know anything about this?
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The adjustment is right on the carb, pretty self explanatory when you look at it.
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