Home » Public Forums » GMCnet » [GMCnet] I give up. (Onan)
| Re: [GMCnet] I give up. (Onan) [message #190438 is a reply to message #190436] |
Thu, 15 November 2012 21:20   |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Sometimes the drinking is all that keeps the fantasy of finishing the GMC alive Robin.
BURP
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 15, 2012, at 7:16 PM, Robin Hood <loxley@gmail.com> wrote:
> On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com> wrote:
>> Is there a failure mode that includes backfires and the 5 amp fuse blowing?
>
>
> http://youtu.be/Oz_ZPHdO3FE
>
> Summary:
>
> 1. Ok, no more drinking.
> 2. I started the generator, removed the jumpers, and just as I was
> about to put the meter on pins 8 and 11, the generator started to die,
> and then died with a spectacular backfire. You can see the glow of the
> fireball coming out the exhaust pipe.
> 3. Soon after this, likely due to either the backfire or due to me
> poking around with my meter trying to make sure I got onto pins 8 and
> 11, I noticed the 5 amp fuse was blown.
> 4. I found 1 wire on the VR that had continuity with wire number 8,
> another wire on the VR with continuity going to the now-empty fuse
> holder ("B-pos), and one wire on the VR that I don't know where
> terminates. There is not continuity between any wire and the wire
> currently connected to pin 8 on the board.
> 5. Jumpering the board no longer even causes the fuel pump to run.
>
> I believe the same thing would have happened had I just been drinking
> a coke, but, yeah, lesson learned.
>
> --
> Robin Hood
> Jackson, MS
> 2003 Buick Lesabre
> 1968 Pontiac Catalina
> 1978 GMC Royale motorhome
> 1977 GMC Palm Beach motorhome
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] I give up. (Onan) [message #190439 is a reply to message #190438] |
Thu, 15 November 2012 21:25 |
Robin Hood
Messages: 1078
Registered: April 2011
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Hell, I *know* better... that is, I know they're NEVER "finished". :)
Just various stages of progress.
On Thu, Nov 15, 2012 at 9:20 PM, Todd Sullivan <sgltrac@gmail.com> wrote:
> Sometimes the drinking is all that keeps the fantasy of finishing the GMC alive Robin.
>
> BURP
>
> Sully
> 77 royale
> Seattle
>
> Sent from my iPhone
>
> On Nov 15, 2012, at 7:16 PM, Robin Hood <loxley@gmail.com> wrote:
>
>> On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com> wrote:
>>> Is there a failure mode that includes backfires and the 5 amp fuse blowing?
>>
>>
>> http://youtu.be/Oz_ZPHdO3FE
>>
>> Summary:
>>
>> 1. Ok, no more drinking.
>> 2. I started the generator, removed the jumpers, and just as I was
>> about to put the meter on pins 8 and 11, the generator started to die,
>> and then died with a spectacular backfire. You can see the glow of the
>> fireball coming out the exhaust pipe.
>> 3. Soon after this, likely due to either the backfire or due to me
>> poking around with my meter trying to make sure I got onto pins 8 and
>> 11, I noticed the 5 amp fuse was blown.
>> 4. I found 1 wire on the VR that had continuity with wire number 8,
>> another wire on the VR with continuity going to the now-empty fuse
>> holder ("B-pos), and one wire on the VR that I don't know where
>> terminates. There is not continuity between any wire and the wire
>> currently connected to pin 8 on the board.
>> 5. Jumpering the board no longer even causes the fuel pump to run.
>>
>> I believe the same thing would have happened had I just been drinking
>> a coke, but, yeah, lesson learned.
>>
>> --
>> Robin Hood
>> Jackson, MS
>> 2003 Buick Lesabre
>> 1968 Pontiac Catalina
>> 1978 GMC Royale motorhome
>> 1977 GMC Palm Beach motorhome
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
--
Robin Hood
Jackson, MS
2003 Buick Lesabre
1968 Pontiac Catalina
1978 GMC Royale motorhome
1977 GMC Palm Beach motorhome
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| Re: [GMCnet] I give up. (Onan) [message #190440 is a reply to message #190439] |
Thu, 15 November 2012 21:36 |
sgltrac
Messages: 2797
Registered: April 2011
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Ok. Maybe I meant finished to the point that only discretionary projects remain. I need to pull the front clip in order to repair a rod knock. The Pig been in dry dock since that discovery. At least I figured out what that annoying racket was (is).
Burp
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 15, 2012, at 7:25 PM, Robin Hood <loxley@gmail.com> wrote:
> Hell, I *know* better... that is, I know they're NEVER "finished". :)
> Just various stages of progress.
>
> On Thu, Nov 15, 2012 at 9:20 PM, Todd Sullivan <sgltrac@gmail.com> wrote:
>> Sometimes the drinking is all that keeps the fantasy of finishing the GMC alive Robin.
>>
>> BURP
>>
>> Sully
>> 77 royale
>> Seattle
>>
>> Sent from my iPhone
>>
>> On Nov 15, 2012, at 7:16 PM, Robin Hood <loxley@gmail.com> wrote:
>>
>>> On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com> wrote:
>>>> Is there a failure mode that includes backfires and the 5 amp fuse blowing?
>>>
>>>
>>> http://youtu.be/Oz_ZPHdO3FE
>>>
>>> Summary:
>>>
>>> 1. Ok, no more drinking.
>>> 2. I started the generator, removed the jumpers, and just as I was
>>> about to put the meter on pins 8 and 11, the generator started to die,
>>> and then died with a spectacular backfire. You can see the glow of the
>>> fireball coming out the exhaust pipe.
>>> 3. Soon after this, likely due to either the backfire or due to me
>>> poking around with my meter trying to make sure I got onto pins 8 and
>>> 11, I noticed the 5 amp fuse was blown.
>>> 4. I found 1 wire on the VR that had continuity with wire number 8,
>>> another wire on the VR with continuity going to the now-empty fuse
>>> holder ("B-pos), and one wire on the VR that I don't know where
>>> terminates. There is not continuity between any wire and the wire
>>> currently connected to pin 8 on the board.
>>> 5. Jumpering the board no longer even causes the fuel pump to run.
>>>
>>> I believe the same thing would have happened had I just been drinking
>>> a coke, but, yeah, lesson learned.
>>>
>>> --
>>> Robin Hood
>>> Jackson, MS
>>> 2003 Buick Lesabre
>>> 1968 Pontiac Catalina
>>> 1978 GMC Royale motorhome
>>> 1977 GMC Palm Beach motorhome
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
>
> --
> Robin Hood
> Jackson, MS
> 2003 Buick Lesabre
> 1968 Pontiac Catalina
> 1978 GMC Royale motorhome
> 1977 GMC Palm Beach motorhome
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] I give up. (Onan) [message #190441 is a reply to message #190439] |
Thu, 15 November 2012 21:37 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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But my Onan purrs like a kitten.
Ironic
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 15, 2012, at 7:25 PM, Robin Hood <loxley@gmail.com> wrote:
> Hell, I *know* better... that is, I know they're NEVER "finished". :)
> Just various stages of progress.
>
> On Thu, Nov 15, 2012 at 9:20 PM, Todd Sullivan <sgltrac@gmail.com> wrote:
>> Sometimes the drinking is all that keeps the fantasy of finishing the GMC alive Robin.
>>
>> BURP
>>
>> Sully
>> 77 royale
>> Seattle
>>
>> Sent from my iPhone
>>
>> On Nov 15, 2012, at 7:16 PM, Robin Hood <loxley@gmail.com> wrote:
>>
>>> On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com> wrote:
>>>> Is there a failure mode that includes backfires and the 5 amp fuse blowing?
>>>
>>>
>>> http://youtu.be/Oz_ZPHdO3FE
>>>
>>> Summary:
>>>
>>> 1. Ok, no more drinking.
>>> 2. I started the generator, removed the jumpers, and just as I was
>>> about to put the meter on pins 8 and 11, the generator started to die,
>>> and then died with a spectacular backfire. You can see the glow of the
>>> fireball coming out the exhaust pipe.
>>> 3. Soon after this, likely due to either the backfire or due to me
>>> poking around with my meter trying to make sure I got onto pins 8 and
>>> 11, I noticed the 5 amp fuse was blown.
>>> 4. I found 1 wire on the VR that had continuity with wire number 8,
>>> another wire on the VR with continuity going to the now-empty fuse
>>> holder ("B-pos), and one wire on the VR that I don't know where
>>> terminates. There is not continuity between any wire and the wire
>>> currently connected to pin 8 on the board.
>>> 5. Jumpering the board no longer even causes the fuel pump to run.
>>>
>>> I believe the same thing would have happened had I just been drinking
>>> a coke, but, yeah, lesson learned.
>>>
>>> --
>>> Robin Hood
>>> Jackson, MS
>>> 2003 Buick Lesabre
>>> 1968 Pontiac Catalina
>>> 1978 GMC Royale motorhome
>>> 1977 GMC Palm Beach motorhome
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
>
> --
> Robin Hood
> Jackson, MS
> 2003 Buick Lesabre
> 1968 Pontiac Catalina
> 1978 GMC Royale motorhome
> 1977 GMC Palm Beach motorhome
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] I give up. (Onan) [message #190446 is a reply to message #190438] |
Thu, 15 November 2012 22:42 |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
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Senior Member |
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BURP! burp,
mickey
77 palm beach burp,
anaheim ca.
On Nov 15, 2012, at 7:20 PM, Todd Sullivan wrote:
> Sometimes the drinking is all that keeps the fantasy of finishing the GMC alive Robin.
>
> BURP
>
> Sully
> 77 royale
> Seattle
>
> Sent from my iPhone
>
> On Nov 15, 2012, at 7:16 PM, Robin Hood <loxley@gmail.com> wrote:
>
>> On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com> wrote:
>>> Is there a failure mode that includes backfires and the 5 amp fuse blowing?
>>
>>
>> http://youtu.be/Oz_ZPHdO3FE
>>
>> Summary:
>>
>> 1. Ok, no more drinking.
>> 2. I started the generator, removed the jumpers, and just as I was
>> about to put the meter on pins 8 and 11, the generator started to die,
>> and then died with a spectacular backfire. You can see the glow of the
>> fireball coming out the exhaust pipe.
>> 3. Soon after this, likely due to either the backfire or due to me
>> poking around with my meter trying to make sure I got onto pins 8 and
>> 11, I noticed the 5 amp fuse was blown.
>> 4. I found 1 wire on the VR that had continuity with wire number 8,
>> another wire on the VR with continuity going to the now-empty fuse
>> holder ("B-pos), and one wire on the VR that I don't know where
>> terminates. There is not continuity between any wire and the wire
>> currently connected to pin 8 on the board.
>> 5. Jumpering the board no longer even causes the fuel pump to run.
>>
>> I believe the same thing would have happened had I just been drinking
>> a coke, but, yeah, lesson learned.
>>
>> --
>> Robin Hood
>> Jackson, MS
>> 2003 Buick Lesabre
>> 1968 Pontiac Catalina
>> 1978 GMC Royale motorhome
>> 1977 GMC Palm Beach motorhome
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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| Re: [GMCnet] I give up. (Onan) [message #190447 is a reply to message #190436] |
Fri, 16 November 2012 02:08 |
 |
mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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I might not have time to review the vid and then make the comment:
| Robin Hood wrote on Thu, 15 November 2012 19:16 |
... I noticed the 5 amp fuse was blown.
...
...
5. Jumpering the board no longer even causes the fuel pump to run.
...
|
You are jumping from the fused side of 12v, so it would make sense that the pump no longer runs. There is a reason why it is recommended from this side of the fuse. ... to keep from frying the board.
Replace the fuse and start over...
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] I give up. (Onan) [message #190449 is a reply to message #190436] |
Fri, 16 November 2012 03:14 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| Robin Hood wrote on Thu, 15 November 2012 21:16 |
On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com> wrote:
> Is there a failure mode that includes backfires and the 5 amp fuse blowing?
>
http://youtu.be/Oz_ZPHdO3FE
Summary:
1. Ok, no more drinking.
2. I started the generator, removed the jumpers, and just as I was
about to put the meter on pins 8 and 11, the generator started to die,
and then died with a spectacular backfire. You can see the glow of the
fireball coming out the exhaust pipe.
3. Soon after this, likely due to either the backfire or due to me
poking around with my meter trying to make sure I got onto pins 8 and
11, I noticed the 5 amp fuse was blown.
4. I found 1 wire on the VR that had continuity with wire number 8,
another wire on the VR with continuity going to the now-empty fuse
holder ("B-pos), and one wire on the VR that I don't know where
terminates. There is not continuity between any wire and the wire
currently connected to pin 8 on the board.
5. Jumpering the board no longer even causes the fuel pump to run.
I believe the same thing would have happened had I just been drinking
a coke, but, yeah, lesson learned.
Robin Hood
|
Put another fuse in it and try again.
OK you have identified the wire that goes to the B+ terminal. The remaining two wires get hooked together and attached L2. That is the pair that you want remove and keep taped together when you want to remove the VR from the circuit.
Do not worry about the blown fuse. I have blown hundreds of them trouble shooting things over the years. That is why the fuses are there and why they are easily replaceable. We probably have 300 - 500 replacement glass fuses around here for that very reason. Laurie and I have also had over 50 years to collect them. I've probably got another 200 of the Blade fuse types.
Do not go over size on the replacement. Use only 5 amp fuse.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] I give up. (Onan) [message #190506 is a reply to message #190449] |
Fri, 16 November 2012 20:16 |
Robin Hood
Messages: 1078
Registered: April 2011
Karma: 3
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Senior Member |
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Update. I have replaced the fuse. Fuel pump (the new one from NAPA that was
working fine) still dead as a murph.
With fuse replaced I have 12v to the coil and 12v to the fuel pump. I used
jumper wires to bring straight 12v direct from the battery to the fuel
pump, verified with the meter, still nothing.
Hypothesis: bad fuel pump.
Problem: it's brand new and I don't see how a backfire could cause a fuel
pump to go bad...
Hypothesis: the backfire, while full of sound and fury, may in truth
signify nothing. The blown fuse on the other hand may be a clue to a more
sinister and hidden story. The pump may have been fine until my tipsy
novice self started poking around with the meter. Perhaps my probes touched
something(s) at the same time that they ought not've. Perhaps whatever
happened took out the pump's internals and was going to zap the board until
the fuse gave its last full measure in support of the mission.
And so I find myself more or less where I started: with a generator with a
bad pump. :) albeit with a known good ignition and carb now at least.
I'm going to Try percussive maintenance in the morning.
Suggestions and thoughts are welcome as always.
On Friday, November 16, 2012, Ken Burton wrote:
>
>
> Robin Hood wrote on Thu, 15 November 2012 21:16
> > On Thu, Nov 15, 2012 at 7:19 PM, Robin Hood <loxley@gmail.com<javascript:;>>
> wrote:
> > > Is there a failure mode that includes backfires and the 5 amp fuse
> blowing?
> > >
> >
> >
> > http://youtu.be/Oz_ZPHdO3FE
> >
> > Summary:
> >
> > 1. Ok, no more drinking.
> > 2. I started the generator, removed the jumpers, and just as I was
> > about to put the meter on pins 8 and 11, the generator started to die,
> > and then died with a spectacular backfire. You can see the glow of the
> > fireball coming out the exhaust pipe.
> > 3. Soon after this, likely due to either the backfire or due to me
> > poking around with my meter trying to make sure I got onto pins 8 and
> > 11, I noticed the 5 amp fuse was blown.
> > 4. I found 1 wire on the VR that had continuity with wire number 8,
> > another wire on the VR with continuity going to the now-empty fuse
> > holder ("B-pos), and one wire on the VR that I don't know where
> > terminates. There is not continuity between any wire and the wire
> > currently connected to pin 8 on the board.
> > 5. Jumpering the board no longer even causes the fuel pump to run.
> >
> > I believe the same thing would have happened had I just been drinking
> > a coke, but, yeah, lesson learned.
> >
> > Robin Hood
>
> Put another fuse in it and try again.
>
> OK you have identified the wire that goes to the B+ terminal. The
> remaining two wires get hooked together and attached L2. That is the pair
> that you want remove and keep taped together when you want to remove the VR
> from the circuit.
>
> Do not worry about the blown fuse. I have blown hundreds of them trouble
> shooting things over the years. That is why the fuses are there and why
> they are easily replaceable. We probably have 300 - 500 replacement glass
> fuses around here for that very reason. Laurie and I have also had over 50
> years to collect them. I've probably got another 200 of the Blade fuse
> types.
>
> Do not go over size on the replacement. Use only 5 amp fuse.
>
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Robin Hood
Jackson, MS
2003 Buick Lesabre
1968 Pontiac Catalina
1978 GMC Royale motorhome
1977 GMC Palm Beach motorhome
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| Re: [GMCnet] I give up. (Onan) [message #190509 is a reply to message #190506] |
Fri, 16 November 2012 20:48 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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| Robin Hood wrote on Fri, 16 November 2012 20:16 |
...
Hypothesis: the backfire, while full of sound and fury, may in truth
signify nothing. The blown fuse on the other hand may be a clue to a more
sinister and hidden story. The pump may have been fine until my tipsy
novice self started poking around with the meter. Perhaps my probes touched
something(s) at the same time that they ought not've. Perhaps whatever
happened took out the pump's internals and was going to zap the board until
the fuse gave its last full measure in support of the mission....
|
More likely, the pump failed and caused the fuse to blow. Take it back to NAPA.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] I give up. (Onan) [message #190514 is a reply to message #190506] |
Fri, 16 November 2012 21:34 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Robin,
You've got the carb cleaner that you can use to clean the OEM pump.
Didn't I provide instructions on how to disassemble and clean it in my email way back?
If you haven't made a gasket to go between the carb and the manifold I would suggest you do so before you run it again.
While it's a long shot you could "F" the Onan up worse and that will REALLY piss you off!
Regards,
Rob M.
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Robin Hood
Sent: Saturday, November 17, 2012 1:17 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] I give up. (Onan)
Update. I have replaced the fuse. Fuel pump (the new one from NAPA that was
working fine) still dead as a murph.
With fuse replaced I have 12v to the coil and 12v to the fuel pump. I used
jumper wires to bring straight 12v direct from the battery to the fuel
pump, verified with the meter, still nothing.
Hypothesis: bad fuel pump.
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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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| Re: [GMCnet] I give up. (Onan) [message #190516 is a reply to message #190511] |
Fri, 16 November 2012 21:33 |
Robin Hood
Messages: 1078
Registered: April 2011
Karma: 3
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Senior Member |
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The original was bad. It changed from a pump to a 12vdc heater. About
burned Tom Phipps's hand when he came over that time. I've still got it,
and even after RTFM I haven't puzzled out how it comes apart, if it's even
something I can fix.
On Friday, November 16, 2012, A. wrote:
>
>
> Robin Hood wrote on Fri, 16 November 2012 20:16
> > Update. I have replaced the fuse. Fuel pump (the new one from NAPA that
> was working fine) still dead as a murph.
> >
> > With fuse replaced I have 12v to the coil and 12v to the fuel pump. I
> used jumper wires to bring straight 12v direct from the battery to the fuel
> pump, verified with the meter, still nothing.
> >
> > Hypothesis: bad fuel pump.
> >
> > Problem: it's brand new and I don't see how a backfire could cause a
> fuel pump to go bad...
> >
> > Hypothesis: the backfire, while full of sound and fury, may in truth
> signify nothing. The blown fuse on the other hand may be a clue to a more
> sinister and hidden story. The pump may have been fine until my tipsy
> novice self started poking around with the meter. Perhaps my probes touched
> something(s) at the same time that they ought not've. Perhaps whatever
> happened took out the pump's internals and was going to zap the board until
> the fuse gave its last full measure in support of the mission.
> >
> > And so I find myself more or less where I started: with a generator with
> a bad pump. :) albeit with a known good ignition and carb now at least.
> >
> > I'm going to Try percussive maintenance in the morning.
> >
> > Suggestions and thoughts are welcome as always.
> You have a bad fuel pump. What happened to the one that came with the
> Onan? If you are not up for resurrecting that one, time to get a
> replacement at the auto parts store and get back on the horse.
>
> --
> '73 23' Sequoia
> UA (Upper Alabama)
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
--
Robin Hood
Jackson, MS
2003 Buick Lesabre
1968 Pontiac Catalina
1978 GMC Royale motorhome
1977 GMC Palm Beach motorhome
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| Re: [GMCnet] I give up. (Onan) [message #190517 is a reply to message #190514] |
Fri, 16 November 2012 21:36 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Don't you have another coach with an o nan? Can't you pluck parts from that o e for your trouble shooting?
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 16, 2012, at 7:34 PM, "Rob Mueller" <robmueller@iinet.net.au> wrote:
> Robin,
>
> You've got the carb cleaner that you can use to clean the OEM pump.
>
> Didn't I provide instructions on how to disassemble and clean it in my email way back?
>
> If you haven't made a gasket to go between the carb and the manifold I would suggest you do so before you run it again.
>
> While it's a long shot you could "F" the Onan up worse and that will REALLY piss you off!
>
> Regards,
> Rob M.
>
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Robin Hood
> Sent: Saturday, November 17, 2012 1:17 PM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] I give up. (Onan)
>
> Update. I have replaced the fuse. Fuel pump (the new one from NAPA that was
> working fine) still dead as a murph.
>
> With fuse replaced I have 12v to the coil and 12v to the fuel pump. I used
> jumper wires to bring straight 12v direct from the battery to the fuel
> pump, verified with the meter, still nothing.
>
> Hypothesis: bad fuel pump.
>
>
>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] I give up. (Onan) [message #190522 is a reply to message #190518] |
Fri, 16 November 2012 21:52 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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You will figure it out. It's a bummer Duane is no longer with us for I'm sure many reasons but he fielded a handful of calls from me and personally walked me through the resurrection of mine. If you have his manual and the advice from the kens , etc you will prevail. His manual is the grail of systematic trouble shooting for the Onan. Hell, I was able to make mine work with it and that says a lot.
I have to add that if the float bowl in yours has a screen in it take it out and put it somewhere you can buy never will access. Mine cost me an extra whole day of trouble shooting.
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 16, 2012, at 7:43 PM, Robin Hood <loxley@gmail.com> wrote:
> Unfortunately, the other coach doesn't have an Onan... I expect that by the
> time I'm done I'll have invested so much time in learning them I'll make
> them my go to for all my power needs. I need at least one more for the
> other coach, and maybe one or two on carts for emergency power.
>
> --
> Robin Hood
> Jackson, MS
> 2003 Buick Lesabre
> 1968 Pontiac Catalina
> 1978 GMC Royale motorhome
> 1977 GMC Palm Beach motorhome
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] I give up. (Onan) [message #190533 is a reply to message #190506] |
Sat, 17 November 2012 02:51 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Take the fuel pump back to Napa and get another one. My assumption is you did nothing wrong. I think the fuel pump shorted out and took out the fuse.
Another thought for you as a temporary work around for a bad pump is to gravity feed the Onan. All that is required is to have the fuel tank a couple of feet above the carb and the gas line full of gas (no air in it).
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] I give up. (Onan) [message #190546 is a reply to message #190506] |
Sat, 17 November 2012 08:10 |
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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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| Robin Hood wrote on Fri, 16 November 2012 21:16 |
Update. I have replaced the fuse. Fuel pump (the new one from NAPA that was working fine) still dead as a murph.
With fuse replaced I have 12v to the coil and 12v to the fuel pump. I used jumper wires to bring straight 12v direct from the battery to the fuel pump, verified with the meter, still nothing.
Hypothesis: bad fuel pump.
Problem: it's brand new and I don't see how a backfire could cause a fuel pump to go bad...
Hypothesis: the backfire, while full of sound and fury, may in truth signify nothing. The blown fuse on the other hand may be a clue to a more sinister and hidden story. The pump may have been fine until my tipsy novice self started poking around with the meter. Perhaps my probes touched something(s) at the same time that they ought not've. Perhaps whatever happened took out the pump's internals and was going to zap the board until the fuse gave its last full measure in support of the mission.
And so I find myself more or less where I started: with a generator with a bad pump.  albeit with a known good ignition and carb now at least.
I'm going to Try percussive maintenance in the morning.
Suggestions and thoughts are welcome as always.
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Robin,
I am on the side with the two others that say the pump took out the fuse, but only after things got so lean that the machine backfired.
Get an new (under warranty) pump and try again. Save the old Bendix, it can be fixed later.
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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