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IBSCOTTT Member

| Joined: | Tue Jul 7th, 2009 |
| Location: | California USA |
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#1 Posted: Tue Jul 7th, 2009 20:28 |
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Onan 2500 LP Generator:
My oil level is fine, and I tried running it without the air filter, it starts and runs fine for about 5 minutes, then it starts to run a bit rough. at about 10 min. it starts to sputter and get hot and then it shuts down. Has anyone else had this probelem?
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Burt Gifford Member

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#2 Posted: Fri Jul 10th, 2009 07:06 |
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| Since there are no replies, yet. What's the current status? Any resolution?
____________________ Burt
2007 AF 29V
05 GMC 2500HD Gas 6.0L W/ 4L80;
Equal-i-zer 1400lb bars; Prodigy
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Cowtown Member


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#3 Posted: Fri Jul 10th, 2009 13:29 |
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Mine did sputter and cough when I got it,
It turned out to be the park plug wire, it would wiggle, turn a bit and then the spark would start to jump to the engine caseing, instead of making its way into the cylinder.
LP tanks are full?
Working with LP is rough, the specialized tools to check/set pressures is a pain...
Last edited on Fri Jul 10th, 2009 13:33 by Cowtown
____________________ 2005 Dodge 3500 SRW Cumins HO 5.9, 4X4
Bullydog PMT with pyro,
5" stainless exhaust, turbo back.
2002 AF 990.
82 Honda 900F (my baby)
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IBSCOTTT Member

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#4 Posted: Fri Jul 10th, 2009 15:06 |
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Thanks for your suggestion regarding the plug wire. I am planning on pulling the plug and replacing it and checking the connection, but the Onan dealer who installed the genset installed it so I must pull the unit to get to the plug (smart). I also have talked with a mechanic friend (as the local Onan "full service" dealer will not work on RV gensets anymore! They say they dont make enough profit"). My mechanic friend thinks there is a cooling fan that may be causing it to overheat, possible a loose or broken belt. It may have an electric fan that is having problems, I need to verify which is has. The biggest problem is I must pull an interior closet completely apart to get to the generator (brilliant Onan Installers again. I will post a solution once I figure it out.
I appreciate the dialog.
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tootone Member

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#5 Posted: Sat Jul 11th, 2009 08:10 |
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| High temp is caracteristic of a lean condition, as is sputtering and dying. Possibily a piece of debris in the fuel line, the first place it would stop is the pressure regulator. Good luck. Tootone.
____________________ Tom & Carla
Black Lab, Kanga
09 Dodge Ram 3500
09 AF 36-5V
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Ranch Flunky Member


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#6 Posted: Tue Jul 14th, 2009 00:36 |
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Can't help you directly, but you might want to use the "Search" function on the forum. I remember previous threads on Onan LP generator issues such as this one:
http://www.afnash.com/forum/view_topic.php?id=2374&forum_id=12&highlight=lp+generators
Please let us know what you find out...
Eric
____________________ Eric and Liz, 190+ horses, several dogs
2004 AF 22H, 2002 Ford F350 7.3L PSD
Avatar: 1853 Button Hand Pumper
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IBSCOTTT Member

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#7 Posted: Tue Jul 14th, 2009 02:52 |
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| How would I check for debris in the regulator? If it is inside the unit can it be blown out with a burst of air?
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IBSCOTTT Member

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#8 Posted: Tue Jul 14th, 2009 02:56 |
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I am going to check out the regulator for debris as Tom sugested, and if that doesn't pan out as my problem I am going to open up the unit to check to see if I have an electric cooling fan that may not be function or a fan belt problem. I will let you know what I find.
Thanks,
Scott
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nielsorj Member

| Joined: | Mon Jan 11th, 2010 |
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#9 Posted: Sat Jan 30th, 2010 21:55 |
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Scott
What was the solution to your problem?
____________________ Ron & Deb Nielson
2008 Silverado 2500HD CCLB SRW Duramax/Allison B&W Companion MaxLoader Springs
2009 Silver Fox AF29-5T
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Rob92761 Member

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#10 Posted: Sun Feb 7th, 2010 01:01 |
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| is your generator lp? if so there is vent tube that is come from inside of the generator and is to lead to atomsphere. my got block by mud bees and had to clean it out. the frist time that this happened the generator wasn't even a month old. might be worth looking into?
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Rob92761 Member

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#11 Posted: Sun Feb 7th, 2010 01:01 |
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| is your generator lp? if so there is vent tube that is come from inside of the generator and is to lead to atomsphere. my got block by mud bees and had to clean it out. the frist time that this happened the generator wasn't even a month old. might be worth looking into?
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