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Old 01-10-2016, 07:01 PM   #1
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Onan 5500 Generator Surging

I posted this over on the main Class A forum but this forum has been such a huge resource I felt I had to give back.
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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.
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Old 01-14-2016, 09:02 PM   #2
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Never heard anything about sea foam. How did you put the sea foam in? Is it a spray?
Thanks..
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Old 01-15-2016, 05:46 AM   #3
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NMRVer - We were having a real problem (probably contaminated fuel) I found the link in the article linked in the post. The link gives some very specific steps. Sea Foam cleaned the carburetor deposits (apparently) and the generator just hums away now! It was a lucky find for us - the alternative was not pretty.

PS: I bought some of the Sea Foam gas additive while we are still so far from any form of help.
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Old 01-15-2016, 05:53 AM   #4
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Onan 5500 Generator Surging

Mine runs better when I have it parked close to Sea Foam....


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Old 01-15-2016, 06:17 AM   #5
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Ted - as good as the stuff is I can believe it. Really helped
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