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[GMCnet] Re: Onan issue [message #366823 is a reply to message #366821] Thu, 16 September 2021 10:17 Go to previous messageGo to previous message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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Let me know via phone as to how it shuts down.
Not worth pulling off the heads yet.
New fuels run very clean so carbon build up is not an issue.

On Thu, Sep 16, 2021 at 6:29 AM Jon Roche wrote:

> I was under the impression, if you jumper from pin 9 to pin 5, and start
> the generator, that you are basically by-passing everthing on the control
> board including the LOP. so that is all that we have done.
>
> Looking at Duane's information, it might be a little more complicated then
> that. this being a dinosaur board currently it does not really have
> "pins" wires are soldered direct to board, so jumpering is a little more
> difficult, but can be done. we can always re-install another old board
> too.
>
> but isn't the LOP switch itself just a grounding thing? so if a person
> disconnects the LOP switch entirely, it should be open circuit and fool it
> into thinking the oil pressure is fine?
>
> we are dealing with fresh oil. It is Ed's, but I believe he is running
> SAE 30 VR1. I know I realy topped off the oil and probably a little over
> filled the oil last week, and did not change a thing. I think he sucked
> some oil out yesterday to meet the top mark and did not effect.
>
> the reason he did that is he went down to the onan dealer and talked to
> them. He also bought onan coil and condenser, and I think new plug
> wires.
> he talked to a couple tech's. one was an idiot, who told him overfilled
> oil can cause shut down, then followed that statement up with he needs to
> read the codes off the diagnostic light near the switch. Ed had to
> explain to him that the diagnostic light on onan generators were not around
> in
> the 70's. Probably not the 80's or 90's either? Another Tech came
> out and seemed to have a better grasp of a 70's onan model. He did not like
> the idea of the Harly coil, and there is a relationship with spark plugs,
> coils and plug gaps that can cause some issues. So now it has a Onan coil
> in it, and still seems to be same problem.
>
> I think to add fuel to the fire, I might run over there this weekend and
> we can take the heads off and do a quick carbon clean up. His is a low
> hour onan, but one never knows. That is easy thing to do. I can't
> imagine that being a problem because of how well and smooth it runs when it
> is
> running. I am still wondering if we are running out of fuel and there is
> an issue with the new fuel pump.
>
>
> --
> Jon Roche
> 75 palm beach
> EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
> _______________________________________________
> GMCnet mailing list
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--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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