Home » Public Forums » GMCnet » Onan fuel line is very old
| [GMCnet] Re: Onan fuel line is very old [message #363006 is a reply to message #363003] |
Tue, 23 March 2021 21:36   |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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As soon as you start to crank the ONAN, the solenoid fuel shut off makes
one "click" and then the resulting output voltage at the control board
provides the 12 volt D.C. for it to remain pulled. When the Onan is turned
off, no 12 volts D.C on the board, and the solenoid plunger retracts,
making another "click". Usually so much noise associated with starter and
related stuff, that those clicks are hard to hear. Easier to hold on to the
thing and feel them, than to hear them.
Jim Hupy
Salem, Oregon
.
On Tue, Mar 23, 2021, 7:24 PM Burl Vibert wrote:
> Yeah, still poking away at the generator in between other jobs. Anyhow,
> while cranking it over found out it also needs a muffler.
> Good point about the fuel level. I'll probably leave it until I get more
> fuel, it's a backburner project anyway.
> What I would like to know if what is the normal sounds to hear when
> priming the system? I got the fuel pump thumping/ticking, but never
> felt/heard
> the solenoid valve click. Is the pump supposed to stop thumping once it
> reaches pressure?
>
>
> James Hupy wrote on Tue, 23 March 2021 19:35
>> Still on the Onan gas line. Just for grins and giggles, blow some air
> back
>> through your new hose, just to verify that you actually have a fuel level
>> high enough in the rear tank to cover up the end of the hose. The pump
> will
>> not account for a low fuel level in the tank. I don't care what your gage
>> says.
>> Jim Hupy
>> Salem, Oregon
>>
>> On Tue, Mar 23, 2021, 5:26 PM Burl Vibert wrote:
>>
>>> JohnL455 wrote on Tue, 23 March 2021 19:16
>>>> If the H4 Amp draw is much higher than stock, lights may start to
> cycle
>>> off after a while when the dash breaker switch starts to do it’s
> job. I
>>>> say this because you don’t mention a relay loom kit.
>>>
>>> I just have regular bulbs in there, I think 55 watt.
>>>
>>> --
>>> Burl Vibert
>>> Kingston, Ontario
>>> 1976 GMC 26 foot, don't know the model
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
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>
> --
> Burl Vibert
> Kingston, Ontario
> 1976 GMC 26 foot, don't know the model
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| Re: [GMCnet] Re: Onan fuel line is very old [message #363010 is a reply to message #363003] |
Wed, 24 March 2021 07:12 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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blur911 wrote on Tue, 23 March 2021 22:24Yeah, still poking away at the generator in between other jobs. Anyhow, while cranking it over found out it also needs a muffler.
Good point about the fuel level. I'll probably leave it until I get more fuel, it's a backburner project anyway.
What I would like to know if what is the normal sounds to hear when priming the system? I got the fuel pump thumping/ticking, but never felt/heard the solenoid valve click. Is the pump supposed to stop thumping once it reaches pressure?
Burl,
If I hold that solenoid valve I can usually feel it, I would say I can't hear, my hearing is a little better than KenB's.
The pump will click pretty fast until it gets to pressure, then it slows down a lot. If you can hear it were your prime switch is, don't even bother cranking until it slows down. If you have doubts about that valve, take it out. While the APU package was designed for GMC, it was sold to other coach builders and many of those had a possible fuel level that was above the carburetor, thus requiring a solid shut off for safety. One of the BFs in my collection seems to never have had one.
Good luck on a muffler, I know JimK has them (of course), but if you find a small engine shop in Canada, they might be able to help. Unfortunately, that specific version of Onan was not very common in stand alone power.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Onan fuel line is very old [message #363104 is a reply to message #363099] |
Sun, 28 March 2021 09:06 |
blur911
Messages: 166
Registered: December 2020
Location: Kingston, Ontario
Karma: 4
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Senior Member |
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Ken Burton wrote on Sun, 28 March 2021 00:47Yes the gasket is part of the fuel filter kit I referened before from NAPA.
This gasket I need now is for the carb float bowl, not the filter. Looks like someone tried to seal it with some goo that's not quite compatible with gas or something.
I found a kit in the parts list, ONAN 146-0185, I'll see if I can get it locally, if not, I'll add it to the list I'm making for JimK as he has the gasket by itself for sale.
I also found out the screw at the bottom of the carb bowl is not a drain like in other carbs, it's basically the main jet adjustment.
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model but we call her Roxie
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| Re: Onan fuel line is very old [message #363121 is a reply to message #363104] |
Sun, 28 March 2021 12:59 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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blur911 wrote on Sun, 28 March 2021 10:06This gasket I need now is for the carb float bowl, not the filter. Looks like someone tried to seal it with some goo that's not quite compatible with gas or something.
I found a kit in the parts list, ONAN 146-0185, I'll see if I can get it locally, if not, I'll add it to the list I'm making for JimK as he has the gasket by itself for sale.
I also found out the screw at the bottom of the carb bowl is not a drain like in other carbs, it's basically the main jet adjustment.
Burl,
Two things here.
If you have the gasket in there, you can use that as a drain, just don't turn the screw that is in that plug.
If JimK does not have that gasket (or you want it sooner), that carburetor is an Walboro LMB and they were used all over. Find any small engine shop and he probably has a bunch hung on a nail.
Good luck cleaning off the RTV.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| [GMCnet] Re: Onan fuel line is very old [message #363132 is a reply to message #363121] |
Mon, 29 March 2021 06:38 |
G?Rs66
Messages: 56
Registered: May 2016
Location: Wautoma, Wi.
Karma: 1
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Member |
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I bought a rebuild kit for mine off of ebay worked great 👍
On Sun, Mar 28, 2021, 12:59 PM Matt Colie wrote:
> blur911 wrote on Sun, 28 March 2021 10:06
>> This gasket I need now is for the carb float bowl, not the filter.
> Looks like someone tried to seal it with some goo that's not quite
> compatible
>> with gas or something.
>> I found a kit in the parts list, ONAN 146-0185, I'll see if I can get it
> locally, if not, I'll add it to the list I'm making for JimK as he has
>> the gasket by itself for sale.
>>
>> I also found out the screw at the bottom of the carb bowl is not a drain
> like in other carbs, it's basically the main jet adjustment.
>
> Burl,
>
> Two things here.
> If you have the gasket in there, you can use that as a drain, just don't
> turn the screw that is in that plug.
>
> If JimK does not have that gasket (or you want it sooner), that carburetor
> is an Walboro LMB and they were used all over. Find any small engine shop
> and he probably has a bunch hung on a nail.
>
> Good luck cleaning off the RTV.
>
> Matt
> --
> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
> GMCES
> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
> Brakes with Applied Control Arms
> SE Michigan - Near DTW - Twixt A2 and Detroit
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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GMCnet mailing list
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1978 Transmode
1966 GTO{frame off restor}
Wautoma, Wi (About 35 miles west of Oshkosh, Wi)
Gene Don't Do Facebook
but Ronny does
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| [GMCnet] Re: Onan fuel line is very old [message #363133 is a reply to message #363132] |
Mon, 29 March 2021 07:08 |
G?Rs66
Messages: 56
Registered: May 2016
Location: Wautoma, Wi.
Karma: 1
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Member |
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Here's a link to what I used
https://www.ebay.com/sch/i.html?_nkw=k1-lmb
On Mon, Mar 29, 2021 at 6:38 AM GENE KNUEPPEL wrote:
> I bought a rebuild kit for mine off of ebay worked great 👍
>
> On Sun, Mar 28, 2021, 12:59 PM Matt Colie wrote:
>
>> blur911 wrote on Sun, 28 March 2021 10:06
>>> This gasket I need now is for the carb float bowl, not the filter.
>> Looks like someone tried to seal it with some goo that's not quite
>> compatible
>>> with gas or something.
>>> I found a kit in the parts list, ONAN 146-0185, I'll see if I can get
>> it locally, if not, I'll add it to the list I'm making for JimK as he has
>>> the gasket by itself for sale.
>>>
>>> I also found out the screw at the bottom of the carb bowl is not a
>> drain like in other carbs, it's basically the main jet adjustment.
>>
>> Burl,
>>
>> Two things here.
>> If you have the gasket in there, you can use that as a drain, just don't
>> turn the screw that is in that plug.
>>
>> If JimK does not have that gasket (or you want it sooner), that
>> carburetor is an Walboro LMB and they were used all over. Find any small
>> engine shop
>> and he probably has a bunch hung on a nail.
>>
>> Good luck cleaning off the RTV.
>>
>> Matt
>> --
>> Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL,
>> GMCES
>> Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum
>> Brakes with Applied Control Arms
>> SE Michigan - Near DTW - Twixt A2 and Detroit
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
1978 Transmode
1966 GTO{frame off restor}
Wautoma, Wi (About 35 miles west of Oshkosh, Wi)
Gene Don't Do Facebook
but Ronny does
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| Re: Onan fuel line is very old [message #363237 is a reply to message #363121] |
Mon, 05 April 2021 12:03 |
blur911
Messages: 166
Registered: December 2020
Location: Kingston, Ontario
Karma: 4
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Senior Member |
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Matt Colie wrote on Sun, 28 March 2021 12:59
that carburetor is an Walboro LMB and they were used all over. Find any small engine shop and he probably has a bunch hung on a nail.
Matt
Just wanted to point out a difference I've found in American vs Canadian service.
I contacted or went to 4 different small-engine shops locally. None of them had parts, none would even look up or order parts, let alone having a bunch hung on a nail. They just said they don't deal with ONAN and told me to order parts online. Canadians might be friendly, but I've found in some services, we don't try very hard.
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model but we call her Roxie
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| Re: Onan fuel line is very old [message #363240 is a reply to message #363237] |
Mon, 05 April 2021 17:13 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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blur911 wrote on Mon, 05 April 2021 13:03Just wanted to point out a difference I've found in American vs Canadian service.
I contacted or went to 4 different small-engine shops locally. None of them had parts, none would even look up or order parts, let alone having a bunch hung on a nail. They just said they don't deal with ONAN and told me to order parts online. Canadians might be friendly, but I've found in some services, we don't try very hard.
Burl,
I guess that is why I have clients still calling me when I officially closed the shop 5 years ago.
When in my barn next, I will see if I still have a kit there. If I do, I could put that gasket in an envelope and mail it to you in standard mail.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
|
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| Re: Onan fuel line is very old [message #363245 is a reply to message #363240] |
Mon, 05 April 2021 18:27 |
blur911
Messages: 166
Registered: December 2020
Location: Kingston, Ontario
Karma: 4
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Senior Member |
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Matt Colie wrote on Mon, 05 April 2021 17:13blur911 wrote on Mon, 05 April 2021 13:03Just wanted to point out a difference I've found in American vs Canadian service.
I contacted or went to 4 different small-engine shops locally. None of them had parts, none would even look up or order parts, let alone having a bunch hung on a nail. They just said they don't deal with ONAN and told me to order parts online. Canadians might be friendly, but I've found in some services, we don't try very hard.
Burl,
I guess that is why I have clients still calling me when I officially closed the shop 5 years ago.
When in my barn next, I will see if I still have a kit there. If I do, I could put that gasket in an envelope and mail it to you in standard mail.
Matt
Thanks Matt, but that's ok. I can order one online, I was just trying to source locally and wanted to vent.
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model but we call her Roxie
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