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Old 08-30-2012, 10:20 AM   #1
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Generator shutting down.

I have a 1990 fleetwood that has an onan 4k emerald plus in it. The problem I have is it shuts itself down after 25-30 minutes of usage and will start back up and runs, but does the same thing all over again. Just bought the rv used and gen only has 50 hours on it. I put new plugs, fuel filter and fuel line and changed the oil. It didn't need all of that but I just did it to rule out any simple things. The rv fuel tank is full. I was thinking maybe the coil but don't want to spend the money on an expensive part that may not be the problem. Nobody around my area will tell me anything, they want $90 hour labor to look at it. I am very capable of doing any repairs, but this sort of has me stumped. Any help would be appreciated. Thanks!

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Old 08-30-2012, 10:34 AM   #2
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Best gen experts Onan Generators - SmokStak
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Old 08-30-2012, 03:49 PM   #3
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Well I decided to run it without load and it ran over an hour without shutting down. Put the a/c on full and it again ran over an hour without shutting down. Whatever it's problem was is hopefully gone. That is one reason the guy got rid of it.
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Old 08-30-2012, 03:54 PM   #4
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If it only had 50hrs on it, then what you did was correct. These things need to be run once in a while to keep the brushes/rings/commutator clean and the piston rings sealed and carb clean, etc etc etc.. Hopefully thats all it needed

Keep that website in mind though.. They can tell you how best to clean the thing without pulling it apart too..
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Old 08-30-2012, 04:03 PM   #5
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Thanks!
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Old 09-04-2012, 11:16 AM   #6
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I had the same problem this summer with mine. Bought a 1995 with only 38 hours on the genny. I also replaced all the same stuff. The conclusion I came to was that the carb was probably partially gummed up. When it died on me I pulled off the fuel line from the carb and sprayed some carb cleaner in it. Then I cranked over the engine a few seconds to suck the carb cleaner into the carb, then I let it sit and soak for at least 20 min and started it back up. I ended up doing this 3 or 4 times in the 2 weeks we were camping in July. Havent had any more problems with it. I should probably still remove the carb and give it a good cleaning. The only reason I didn't just remove it while camping was that due to the tight fit and positioning of everything it looked like more of a pita than I wanted to deal with while on vacation.
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Old 10-23-2012, 12:04 AM   #7
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Run some seafoam thru your gas. It will clean it out.
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