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04-16-2019, 05:55 PM
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#1
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Junior Member
Brand: Thor Motor Coach
Model: CHALLENGER
State: Michigan
Posts: 10
THOR #797
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Onan 5500 carburetor replacement
I need to replace the carburetor on my Onan QG 5500 generator. I've seen pricing fluctuate from $60-$350. I hear these things gum up regularly and not sure I want to drop over $300 for a replacement. Anyone know of a good source to get the best replacement? Part# 146-0774 or 541-0765
Tried everything to clean it out but nothing worked. Was told they're not worth rebuilding and should get a new one.
Thanks for your help...
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ROB
2014 THOR CHALLENGER 37DT
Michigan
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04-16-2019, 06:49 PM
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#2
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,326
THOR #7035
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Have you tried an ultrasonic cleaner?
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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04-16-2019, 06:50 PM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: 22FE
State: New York
Posts: 373
THOR #5330
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If you can get the generator to run, try some seafoam in the fuel. It works wonders to clean up a gummy carb.
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04-16-2019, 06:58 PM
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#4
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Junior Member
Brand: Thor Motor Coach
Model: CHALLENGER
State: Michigan
Posts: 10
THOR #797
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Quote:
Originally Posted by 16ACE27
Have you tried an ultrasonic cleaner?
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Yes, let is sit overnight and it's still clogged. Also tried Seafoam!
__________________
ROB
2014 THOR CHALLENGER 37DT
Michigan
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04-16-2019, 07:03 PM
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#5
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Junior Member
Brand: Thor Motor Coach
Model: CHALLENGER
State: Michigan
Posts: 10
THOR #797
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Quote:
Originally Posted by cpmath
If you can get the generator to run, try some seafoam in the fuel. It works wonders to clean up a gummy carb.
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Can't get it to run. Used Seafoam and ether to get it running but tried for over an hour and it wouldn't keep running. We had good weather and hookups last year, we didn't use the generator and like a fool I didn't start it periodically. It's like I ran super glue through. That's why I'm just looking for suggestions on whether or not I should just buy the $60 replacement rather than the $300 Onan replacement.
__________________
ROB
2014 THOR CHALLENGER 37DT
Michigan
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04-16-2019, 09:20 PM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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Personally, I'd go OEM-Onan...bite the bullet once and do it right. If not, the bullet will bite you on the hottest day of the year when the power is out at the CG and the wife is pregnant with triplets and the furnace board is stuck in the "on" position with a full tank of LP. At least if you had other problems more serious with the generator later, you'll have better support...they will point to the carb, shaking their finger in the wrong motion.
__________________
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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04-16-2019, 10:40 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: challenger 37FH
State: Delaware
Posts: 695
THOR #13399
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Amazon $95.99 with gaskets,fuel filter and jet cleaning tool. Direct replacement
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04-17-2019, 12:01 AM
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#8
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,326
THOR #7035
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Quote:
Originally Posted by wrapped
Amazon $95.99 with gaskets,fuel filter and jet cleaning tool. Direct replacement
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And the link is??????
Where??
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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04-17-2019, 01:03 AM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: challenger 37FH
State: Delaware
Posts: 695
THOR #13399
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Google your carburetor #541-0765 click on Amazon
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04-17-2019, 01:34 AM
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#10
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,326
THOR #7035
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Quote:
Originally Posted by wrapped
Google your carburetor #541-0765 click on Amazon
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You mean like this?
https://www.amazon.com/s?k=%23541-0765&ref=nb_sb_noss_2
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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04-17-2019, 11:30 AM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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Usually, when you shop for the cheapest price first...that's the only thing you get.
__________________
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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04-17-2019, 12:24 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: challenger 37FH
State: Delaware
Posts: 695
THOR #13399
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I've ordered many repair parts from Amazon and they come from big brand name manufacturers,never had a complaint.
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04-18-2019, 06:20 PM
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#13
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Junior Member
Brand: Thor Motor Coach
Model: CHALLENGER
State: Michigan
Posts: 10
THOR #797
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Thanks guys...
__________________
ROB
2014 THOR CHALLENGER 37DT
Michigan
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06-09-2019, 03:51 PM
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#14
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Junior Member
Brand: Thor Motor Coach
Model: CHALLENGER
State: Michigan
Posts: 10
THOR #797
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New carb, fuel filter and fuel pump. Damn thing still will NOT stay running. It fires up for literally one second and then stalls. Any ideas?
__________________
ROB
2014 THOR CHALLENGER 37DT
Michigan
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06-09-2019, 04:59 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,884
THOR #6826
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Quote:
Originally Posted by TheDark1
New carb, fuel filter and fuel pump. Damn thing still will NOT stay running. It fires up for literally one second and then stalls. Any ideas?
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Be sure it’s actually getting fuel. Is the float bowl full or does it pump fuel when the line is disconnected and you turn over on the starter? Thinking a kinked line or plugged pickup in the tank. Only need three things to stay running, fuel, air and spark. Fuel is the usual culprit but you’ve pretty much got that covered. Less likely, did you check the air filter and replace the spark plug? Very (very!) unlikely might be a plugged exhaust or bad primary wiring. Good luck.
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06-09-2019, 06:25 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 4,177
THOR #6411
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Quote:
Originally Posted by TheDark1
New carb, fuel filter and fuel pump. Damn thing still will NOT stay running. It fires up for literally one second and then stalls. Any ideas?
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If it stops without a stop signal from of the switches, the light will flash the computer error code. Mine was flashing an over-speed code. After playing with the governor, I found a huge mud dauber nest blocking the governor's arm. Much water, big screwdriver and a hammer cleared the obstruction and all is well.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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06-09-2019, 07:59 PM
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#17
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,326
THOR #7035
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Low oil shutoff? You may have plenty of oil but if the circuit thinks it's low then it shuts you down.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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