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Old 09-03-2011, 11:16 AM   #1
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Generator won't stay running

2006 class c with Oman generator. It starts and runs for about 30 to 60 seconds and shuts off. Then it won't start again for about 10 min.
Any ideas?

Thanks in advance

P.S. There is enough fuel in the tank.
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Old 09-03-2011, 01:14 PM   #2
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Different possibilities for different models. What model Onan do you have?

Dave
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Old 09-04-2011, 12:59 AM   #3
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well if your motorhome is like mine , the fuel has to be above a quarter tank , the other thing that comes to mind is if it has many hours of run time the valves might need ajusting, my 4k only has two thousands clearence intake and exhaust
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Old 09-04-2011, 02:25 PM   #4
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i'm new at rving but tonysrep please explain valves might need adjusting, my 4K only has 2 thousands clearance intake and exhaust)

my problem since fixed i have a 4K onan also well i plugged in my multimeter into one of the sockets i also tried to bring generator under load with a 5K lamp well my reading under load was 140 ( way to high) today they are 123 i took MH to a cummins dealership and after 3K work it was fixed it was a breaker/bushings but now my inside mh switch that starts generator don't work so i got to do it manually oh well i do see a 5 pin electrical wire but its not connected and i have'nt gotten around to squeeze my head in yet
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Old 09-05-2011, 12:22 AM   #5
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I posted for a friend. I'll have some specs tomorrow.
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Old 09-05-2011, 07:08 PM   #6
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well I have an 02 microquiet 4k I believe the valves are due for ajustment at 450 hours the spec is 2 thousands clearance both intake and exhaust
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Old 09-05-2011, 07:58 PM   #7
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be sure to check for overheating..
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Old 09-06-2011, 12:34 PM   #8
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Here's the info from the generator....
ONAN Microquiet 4000. Model# 4KYFA26100K. Spec K 120volt

Thanks
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Old 09-06-2011, 04:20 PM   #9
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racer26,
The service manual for a 4.0KY Spec K is 981-0530C (http://www.cumminsonan.com/www/pdf/m.../981-0530C.pdf).
Is there a fault code indicated? Procedures for reading it are contained in the service manual and the operators manual.

Operators Manual: http://www.cumminsonan.com/www/pdf/m.../981-0159D.pdf

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Old 09-07-2011, 10:42 AM   #10
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Onan problem....

Racer26,

I have an '06 Itasca with same generator & had a similar problem as yours. Found out after much testing/reading/calling/etc., that OE fuel pump took a crap. Easy to test for [afterwards!]: just disconnect fuel hose at generator carburetor, push prime button & see how much fuel flows into the plastic container you're holding to catch it. OE pump pressure is set at ~2psi & volume is low -- but should be capable of filling a small [~8oz] container in short order. If fuel flows initially then stops, the fuel filter may be clogged which compounds the problem. Both components are easily replaceable with hand tools & are available from Onan for ~$125.....
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Old 09-09-2011, 05:13 PM   #11
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Thanks for your help. It ended up being the fuel filter and there off to the Penn state Bamako game

Tom
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Old 09-09-2011, 05:27 PM   #12
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Tom,
Thanks for getting back to us and letting us know what you found!
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Old 09-09-2011, 08:44 PM   #13
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Bama
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Old 09-13-2011, 07:31 PM   #14
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low oil will make it shut off.

Bill
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