Home » Public Forums » GMCnet » Help needed with Onan (Lost a part)
| Help needed with Onan [message #207830] |
Wed, 15 May 2013 16:13  |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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With my usual mechanical abilities I have screwed up once again. In walking through a diagnosis on my Onan 6000 with the help of Ken Burton, I removed the carb bowl. Seeing no gas in the bowl, I'm figuring it's a fuel problem (duh!)
Then I notice that the hose from the tank to the pump is pinched in a way that could impede the flow of gasoline. The pump is pumping.
Since it was off I decided to give the bowl a good cleaning with brake cleaner. I dried it with the air hose and as I did the bolt (nut) in the center of the bowl dropped. I have the washer and the screen but the bolt is missing.
The bowl has WALBRO USA stamped on the bottom and no other identifying marks.
Anyone have a dead Onan sitting around or a source for parts for these things?
I'm going to try to find a child's metal detector to try and locate the part I lost, but in the meantime I have a trip to florida coming up and I know it's going to be hot!
Thanks a million.
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] Help needed with Onan [message #207838 is a reply to message #207836] |
Wed, 15 May 2013 17:26  |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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you mean Jim Bounds?
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] Help needed with Onan [message #207860 is a reply to message #207841] |
Wed, 15 May 2013 21:46 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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My bad. I get all the vendors mixed up...but it is not Stora in Okeechobee is it?
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] Help needed with Onan [message #207908 is a reply to message #207860] |
Thu, 16 May 2013 07:46 |
Emery Stora
Messages: 959
Registered: January 2011
Karma: 4
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Stora is not a vendor and now lives in Frederick, CO. He has been an owner of a GMC for 33 years, has been Technical VP of BMC Western States in the past. Has been Administrator of GMC Motorhomes International (membership Manager and Convention manager), then Treasurer and is currently President.
Alex Sirum GMC is the vendor in Okeechobee , FL. Alex's son, Jeff Sirum is currently running the company.
Emery Stora
77 Kingsley
Frederick, CO
On May 15, 2013, at 8:46 PM, Stick Miller <stickmiller@gmail.com> wrote:
>
>
> My bad. I get all the vendors mixed up...but it is not Stora in Okeechobee is it?
> --
> Stick Miller
> '78 Royale - she left me for another man
> '76 Eleganza
> Americus, Georgia
>
>
>
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| Re: [GMCnet] Help needed with Onan [message #208160 is a reply to message #208100] |
Sat, 18 May 2013 07:30 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
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FOUND IT
After agonizing all night I decided to call in the troops. Elise went out with the $20 metal detector and found it in about a minute. Many thanks to all who responded.
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] Help needed with Onan [message #208267 is a reply to message #208209] |
Sun, 19 May 2013 09:23 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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| mickeysss wrote on Sat, 18 May 2013 20:20 |
How do i move the fuel onan primer up to the door area switch?
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Michael Moose (what my dad always used to call Mickey Mouse)
Here is a link to Jim Bounds' explanation of the Onan prime circuit. It is really pretty simple and it really helps. It sounds like you have a good chance of having your Onan work properly once you get fuel to it.
http://www.gmccoop.com/onan_prime_circuit.htm
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Help needed with Onan [message #208323 is a reply to message #208322] |
Sun, 19 May 2013 18:31 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Mickey,
When you put a jumper from 5 to 9. you should hear the fuel pump. It will make a pulsing sound. As it builds up pressure, the tone of the pulsing will change. At that point, you should have gas in the carburetor fuel bowl. If all other systems are go (ignition, timing, and compression), the machine should start.
Good luck.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Help needed with Onan [message #208326 is a reply to message #208298] |
Sun, 19 May 2013 19:00 |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
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great stuff thanks. mickey :-)
anaheim ca. 77 palm beach
On May 19, 2013, at 10:28 AM, gene Fisher wrote:
> here go
> http://gmcmotorhome.info/onan.htm
> gene
>
>
> On Sun, May 19, 2013 at 7:23 AM, Carl Stouffer <carljr3b@yahoo.com> wrote:
>
>>
>>
>> mickeysss wrote on Sat, 18 May 2013 20:20
>>> How do i move the fuel onan primer up to the door area switch?
>>
>>
>>
>> Michael Moose (what my dad always used to call Mickey Mouse)
>>
>> Here is a link to Jim Bounds' explanation of the Onan prime circuit. It
>> is really pretty simple and it really helps. It sounds like you have a
>> good chance of having your Onan work properly once you get fuel to it.
>>
>> http://www.gmccoop.com/onan_prime_circuit.htm
>> --
>> Carl S.
>> '75 ex Palm Beach
>> Tucson, AZ.
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Help needed with Onan [message #208331 is a reply to message #208323] |
Sun, 19 May 2013 19:14 |
mickeysss
Messages: 1476
Registered: January 2012
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right thank you, i could not hear it while trying to start it and did not have any wire to test the 5 and 9. next time thanks again
mickey :-) anaheim ca. 77 palm baech
On May 19, 2013, at 4:31 PM, Carl Stouffer wrote:
>
>
> Mickey,
>
> When you put a jumper from 5 to 9. you should hear the fuel pump. It will make a pulsing sound. As it builds up pressure, the tone of the pulsing will change. At that point, you should have gas in the carburetor fuel bowl. If all other systems are go (ignition, timing, and compression), the machine should start.
>
> Good luck.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Help needed with Onan [message #208341 is a reply to message #208331] |
Sun, 19 May 2013 20:57 |
stick miller
Messages: 1036
Registered: March 2010
Location: Americus, Georgia
Karma: 0
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OK - I think my problem is solved thanks to a lot of help from Ken Burton and, today, hands on help from John Beaver. John owns the engine shop where Ken Henderson built his Cadillac engine and he (John) owns a GMC that will be quite a coach when finished.
Having narrowed the problem down to fuel, I proceeded to remove the long fuel line to the tank. As an experiment I placed a gas can next to the tank and ran a hose direct to the pump. It started, ran roughly and then shut off.
After several configurations I was about ready to set fire to the damn thing when John drove up. We got on the phone to Ken Burton and after several different setups, John reckoned that the pump was pumping but it wasn't getting through the carburetor to the bowl.
After removing the carb and cleaning thoroughly - it really wasn't all that dirty - John felt that the float was not moving far enough to allow the needle valve to open completely. A quick bend with a screwdriver opened that up a bit.
That did the trick. Now I need to get fuel line to run to the permanent tank, but it looks like problem solved.
If this seems simplistic or overstated, I'm sorry. This stuff just doesn't come naturally to me and I revel in a success. Thanks guys and thanks to Ken Henderson for the use of his pit and shop.
Stick Miller
'78 Royale - "White Trash" - she left me for another man
'76 Eleganza - "Cousin Eddie" Sold
'84 Bluebird Wanderlodge - "Past Tents"
Americus, GA
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| Re: [GMCnet] Help needed with Onan [message #208345 is a reply to message #208341] |
Sun, 19 May 2013 21:18 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Stick,
If you / John didn't set the float as per the Maintenance Manual I would suggest you do so, if you don't you could wind up with gas
pouring out onto a hot Onan and that ain't good!
I'm not going to look it up for you as I reckon as a writer you should be good at finding stuff in books. ;-)
Regards,
Rob M.
-----Original Message-----
From: Stick Miller
OK - I think my problem is solved thanks to a lot of help from Ken Burton and, today, hands on help from John Beaver. John owns the
engine shop where Ken Henderson built his Cadillac engine and he (John) owns a GMC that will be quite a coach when finished.
Having narrowed the problem down to fuel, I proceeded to remove the long fuel line to the tank. As an experiment I placed a gas can
next to the tank and ran a hose direct to the pump. It started, ran roughly and then shut off.
After several configurations I was about ready to set fire to the damn thing when John drove up. We got on the phone to Ken Burton
and after several different setups, John reckoned that the pump was pumping but it wasn't getting through the carburetor to the
bowl.
After removing the carb and cleaning thoroughly - it really wasn't all that dirty - John felt that the float was not moving far
enough to allow the needle valve to open completely. A quick bend with a screwdriver opened that up a bit.
That did the trick. Now I need to get fuel line to run to the permanent tank, but it looks like problem solved.
If this seems simplistic or overstated, I'm sorry. This stuff just doesn't come naturally to me and I revel in a success. Thanks
guys and thanks to Ken Henderson for the use of his pit and shop.
--
Stick
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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