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Old 01-10-2016, 06:54 PM   #1
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Onan 5500 Generator Surging

If this is covered in another thread apologies but I didn't find it on IRV2 or other boards. Here goes.

The problem: Onan 5500 Gasoline powered generator in our 2015 Thor Challenger developed what I can best describe as frequent surge in operation. It was also fluctuating the electrical power. It continued to get worst. I looked all over the internet and could not find a good answer until I went to this website https://www.equinerv.com/node/2279. It REALLY helped.

Bottomline I followed the directions for using Sea Foam and WOW problem fixed. Apparently the carburetor had gotten "gummed up" and the Sea Foam cleaned it out.

We are at least 140 miles from a repair facility for our generator and without this fix our winter travel plans would have been significantly altered.

Thanks to the folks over at EquineRV.com.

US Army Retired - loving it in our Challenger 37TB.

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Old 01-10-2016, 06:59 PM   #2
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Thanks for sharing!!

Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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Old 01-10-2016, 07:17 PM   #3
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How did you use the seafoam? is it added to the gas tank?
Ford RV V10 5 star Tow tune
Front/Read Roadmaster 1 3/4" anti-sway bars. Roadmaster steering stabilizer
2009 Acme Tow dolly w/ 2014 Avalon Hybrid Limited
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Old 01-10-2016, 07:17 PM   #4
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My brother is a small engines tech, he works for a local company but also has his own business. He swears by Seafoam to the point that I started to use it in my lawn mower and also run a dose through my older truck about every year since it sits a lot.
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
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Old 01-10-2016, 07:44 PM   #5
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How did you use it?

Originally Posted by NMRVer View Post
How did you use the seafoam? is it added to the gas tank?
Just like the site suggests. Add some to the tank to dry any water and get at the contaminants, then took off the air filter and sprayed the Sea Foam Spray Cleaner and Lube (12 oz.) into carburetor directly. Wham.
US Army Retired - loving it in our Challenger 37TB.

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generator, onan

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