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07-04-2016, 09:49 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: ACE 29.3
State: New York
Posts: 113
THOR #3187
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Onan QG 4000 Generator
So I havent used my RV in a couple of weeks and went out to start the generator and nothing happened. No start whatsoever. Can anyone help me determine what is wrong?
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07-04-2016, 10:56 PM
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#2
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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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Did it crank over or nothing? If it cranked did you prime it first? (Prime by holding the start/stop switch down on Stop for about 20 seconds--the light will come on and you should hear the fuel pump.)
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07-04-2016, 10:57 PM
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#3
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Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
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Didn't start, didn't turn over, or didn't do anything? If nothing happened it sounds like a dead battery, otherwise need more info.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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07-04-2016, 11:05 PM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: ACE 29.3
State: New York
Posts: 113
THOR #3187
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It didnt crank or do anything. When I tried to do it from the generator itself it didnt crank at all.
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07-04-2016, 11:07 PM
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#5
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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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Yeah that sounds like a dead house battery. Is the camper plugged in? Is the use/store switch on store?
Does the ACE have the jumpstart switch? If so start the V-10 and hold down the jump switch and try the genny (while holding down the jump switch).
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07-04-2016, 11:11 PM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: ACE 29.3
State: New York
Posts: 113
THOR #3187
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What is a jump start switch?
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07-04-2016, 11:17 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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On our Axis there is a switch on the dash labelled something like "emergency start" or something...sigh don't remember the exact text on it. When held down it shorts the house battery together with the chassis battery allowing the house battery to start the V-10 or the chassis battery to start the generator.
I know some Thor motorcoaches don't have it, however (as people have indicated that was not present on their coach on the forum here).
Update: Ah here is a pic:
To the right of the lit generator switch is "Emer Start".
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07-05-2016, 01:37 AM
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#8
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Senior Member
Brand: Still Looking
Model: 2016 Newmar
State: Indiana
Posts: 323
THOR #1075
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I had the air conditioner on in my Axis a few weeks ago and my wife started the microwave. With both running the circuit breaker on the generator itself blew. I think it was located on the lower right of the generator itself. You might check the manual and find where it is. Just a thought,
Phil
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Phil and Linda Smith
2016 Newmar Bar Star Sport 2903
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07-05-2016, 01:44 AM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Axis 24.1
State: California
Posts: 135
THOR #3552
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If your batteries are ok, then it might be the breaker near the battery bank. I was hooking up my solar system and unknowingly tripper the breaker. Generator would not start until I push the little yellow lever back down.
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11-04-2016, 04:32 PM
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#10
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Member
Brand: Thor Motor Coach
State: Texas
Posts: 44
THOR #5409
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ANOTHER Onan 4000 ky question:
yes another question/problem
last problem solved with new fuel pump and oil level
NEW PROBLEM
Generator will turn over but will not fire to start.
Steps that I have taken to fix the problem
checked fuel pump. working
check fuel line - clean
Changed spark plug. working
Clean carburetor. Working
Gas tank full
oil level on the dot
wires are connected and working
used starter fluid to try to help start nothing.
turns over no fire
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11-05-2016, 04:18 AM
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#11
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Member
Brand: Thor Motor Coach
Model: A.C.E 29.3
State: Minnesota
Posts: 92
THOR #4198
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[QUOTE=JamieGeek;38971]On our Axis there is a switch on the dash labelled something like "emergency start" or something...sigh don't remember the exact text on it. When held down it shorts the house battery together with the chassis battery allowing the house battery to start the V-10 or the chassis battery to start the generator.
I know some Thor motorcoaches don't have it, however (as people have indicated that was not present on their coach on the forum here).
---------------
The ACE has one. I think it is labeled bypass. If I recall correctly, it is on the dash left of the steering wheel.
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John - Vadnais Heights, MN
Thor ACE 29.3 (No outside kitchen) 2017
ARS - KØTG
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11-05-2016, 01:44 PM
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#12
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Member
Brand: Thor Motor Coach
State: Texas
Posts: 44
THOR #5409
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Have it running but now it floods out
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11-05-2016, 01:52 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Windsport 29M
State: Indiana
Posts: 3,692
THOR #5196
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Sounds like a stuck float valve, try gently tapping with a rubber mallet, that might free it up. Generators are sometimes sensitive to poor grades of gasoline. Go to TopTier.com and look at the available brands. I keep a list of dealers in my glovebox when traveling and don't buy anything but Top Tier brands.
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12-26-2016, 05:26 PM
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#14
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Member
Brand: Thor Motor Coach
Model: Vegas 24.1
State: Florida
Posts: 47
THOR #3770
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Continuing on with the thread....
Took a quick look at the Onan RV QG 4000 generator today to see about changing the oil and replacing the oil and air filter. Air filter is readily apparent. But the oil drain is inside the housing and didn't see a filter.
Search of online manuals was inconclusive. This doesn't seem like something that has to be done at the dealer. Any one do this at home?
(edit) Did a you tube search
https://youtu.be/nKPpm-L41Vs
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12-26-2016, 05:35 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31K
State: Florida
Posts: 145
THOR #3520
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Quote:
Originally Posted by Paul_Leslie
Took a quick look at the Onan RV QG 4000 generator today to see about changing the oil and replacing the oil and air filter. Air filter is readily apparent. But the oil drain is inside the housing and didn't see a filter.
Search of online manuals was inconclusive. This doesn't seem like something that has to be done at the dealer. Any one do this at home?
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Check Youtube for video instructions.
Chuck Peck in CasaLoca
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12-26-2016, 05:37 PM
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#16
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Member
Brand: Thor Motor Coach
State: Texas
Posts: 44
THOR #5409
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Change the oil all the time at home. Just make sure you keep receipts and document when changed if warranty issues comes up
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12-26-2016, 05:43 PM
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#17
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Senior Member
Brand: Thor Motor Coach
Model: 2015 Vegas 24.1
State: Pennsylvania
Posts: 1,468
THOR #2601
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When you document the oil change you do yourself be sure to record the time on the generator time meter. Oil change requirements are based on generator elapsed time not calendar intervals.
__________________
Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)
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12-26-2016, 06:03 PM
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#18
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Member
Brand: Thor Motor Coach
Model: Vegas 24.1
State: Florida
Posts: 47
THOR #3770
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No Oil Filter on Onan RV QG 4000
Thanks Ed and Wayne.
You can see on edit that I had found some videos on YouTube, one that states there is no filter on the Onan RV QG 4000 generator.
Onans generator manual is pretty generic, covers too many of them. Can anyone confirm the lack of filter on the Vegas 24.1 generator?
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12-26-2016, 06:25 PM
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#19
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Senior Member
Brand: Thor Motor Coach
Model: 2015 Vegas 24.1
State: Pennsylvania
Posts: 1,468
THOR #2601
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My model number is 4KYFA26100P. There is no oil filter listed for the KY generator.
__________________
Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)
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12-26-2016, 10:03 PM
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#20
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Windsport 29M
State: Indiana
Posts: 3,692
THOR #5196
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I don't think any of the 4000 watt Onans have a filter.
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