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Onan 15kw help


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  #41  
Old 03-11-2017, 01:46:15 PM
kosmo101 kosmo101 is offline
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Default Re: Onan 15kw help

i think pulling it out and being able to get it to an area where we can get around the whole unit would be a smart first step. Then i can clean up the area where it sits as well, redo as needed if it is going back in. also obvously check out the unit, fix exhaust, etc. i would be curious if i pulled off this piping and redid it how it sounded.

thanks to all. will update as i make progress. waiting for a forklift to be available . stupid person who designed this setup. the truck has a roll up door and it oopens only a few inches past the generators top. so i must use a forklift. was going to use a engine hoist but cant get it inside this area. ugh.!!!
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  #42  
Old 03-11-2017, 01:52:27 PM
Vanman Vanman is offline
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Default Re: Onan 15kw help

Yeah, you've got to pull it to do it right. Would have been nice if they had installed it on a pair of those heavy duty slides so you could just pull it out like a drawer. Something to consider before you put it all back together.

Listening to your video again, it almost sounds like you have two bad cylinders, and I'm wondering if it's been overheated due to the restricted cooling air discharge.

One other thought before you pull it, if you haven't already, do verify that it is indeed generating.

Last edited by Vanman; 03-11-2017 at 02:03:48 PM.
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  #43  
Old 03-11-2017, 02:16:35 PM
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Default Re: Onan 15kw help

Quote:
Originally Posted by Vanman View Post
Listen to it cranking! Sounds like one cylinder with little compression, leaking out of the exhaust valve. Also agree that it sounds like a broken exhaust pipe.
Keith
I agree with Keith on a valve being either burned or sticking. Do a compression check on it before you go any farther.
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  #44  
Old 03-13-2017, 08:08:43 AM
kosmo101 kosmo101 is offline
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Default Re: Onan 15kw help

So i was getting it ready to pull out of the truck. unbolted it and then started to cut this odd exhaust pipe where it goes through the floor. as I am cutting it, the pipe behind (which connects to mainfold...start to flop around. Meaning like it is not connected or very loose! I assume as many of you did there is some sort of connection issue. I will get the unit out today and see behind it to know what is happening. thanks to all for the advice.

thanks
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  #45  
Old 03-15-2017, 07:46:03 PM
Max Thompson Max Thompson is offline
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Default Re: Onan 15kw help

Looks like he gave up on the JC. It is listed on flea-bay for $1700 (another over priced Onan).

http://www.ebay.com/itm/Onan-15kw-Ga...IAAOSw4YdYyU4d
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  #46  
Old 03-15-2017, 07:55:35 PM
kosmo101 kosmo101 is offline
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Default Re: Onan 15kw help

Wow.. thanks for that i think. Yes I don't have the experience to rip it apart and need something reliable for a business so I feel best to sell. Guess that is giving up. Since you think it's overpriced.. what should it be listed at? You do know the lower you list at the lower the offers. If I listed for 600 I'd get offers of 300.

When pulled..exhaust pipe was off as many of you thought.
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  #47  
Old 03-15-2017, 08:17:36 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan 15kw help

You didn't ask me-But for reference, I have bought clean, running and ready to work spark ignited J series sets for prices between from $250 and $1200. The last "needs work" set I bought was in the low end of that range.

I briefly reviewed your posts and did not see any confirmation that the set generates power. I know that it runs (but not well) judging from the sound in your video link. So to me yours is in the "needs work" category.

I live a couple of hours from Nashville, and have a similar JC to rob parts from, so I'm going to be watching.
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  #48  
Old 03-15-2017, 08:23:22 PM
kosmo101 kosmo101 is offline
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Default Re: Onan 15kw help

HI
Thanks and I didn't mean to exclude anyone. I've seen a bunch for sale but seems the ones I saw were higher priced than mine. I was just trying to get some money towards a known good model. It does pit out power as I tried lights and machines in truck. Thanks
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  #49  
Old 03-15-2017, 09:32:43 PM
Ben Clarke Ben Clarke is offline
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Default Re: Onan 15kw help

I'll stir the pot. Anyone here like to swap? A fixer upper for a good runner of adequate size. Any cash difference to be negotiated.
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  #50  
Old 03-15-2017, 10:16:56 PM
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Default Re: Onan 15kw help

Ben , what do you have and what do you want? I go through several machines per year. Cheers Dan
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  #51  
Old 03-16-2017, 09:19:56 PM
Ben Clarke Ben Clarke is offline
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Default Re: Onan 15kw help

Was not thinking of me thought Kosmo might be up for a deal.
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