| ONAN [message #84795] |
Sun, 16 May 2010 06:58  |
rscortezzo
Messages: 49
Registered: January 2007
Location: Green Valley Arizona/ Flo...
Karma: 0
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Member |
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I need some help here.
The last time I used the generator it worked fine. It
was not started for over a year. When it tried to start
it it ran for about 15 seconds and quit, while it ran
a lot of rust came out of the exhaust pipe. I cleaned the
carb. made the correct adjustments, now it starts for
about 2 seconds, then pours raw gas out of the carb.
Any Ideas?
Rich Cortezzo
Green Valley AZ
1978 Eleganza II
F389018
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| Re: ONAN [message #84814 is a reply to message #84795] |
Sun, 16 May 2010 09:20  |
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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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| rscortezzo wrote on Sun, 16 May 2010 07:58 |
I need some help here.
The last time I used the generator it worked fine. It was not started for over a year. When it tried to start it it ran for about 15 seconds and quit, while it ran a lot of rust came out of the exhaust pipe. I cleaned the carb. made the correct adjustments, now it starts for about 2 seconds, then pours raw gas out of the carb.
Any Ideas?
|
Several,
But start by removing carburetor, opening the float bowl carefully and checking the needle and seat.
You have three good chances for problems there.
The first is that you mis-assembled the float/needle/seat parts during cleaning. (Gee - I never did that - Recently - on and Onan)
Second is that there is debris holding the needle off the seat.
Third is a defective component (hope you saved all the old parts), like a damaged needle or a gas-filled float.
If you don't see anything wrong, get another person to read the book and look it over without your help. Sometimes we get stuck with a preconceived mis-conception.
Good Luck
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: [GMCnet] ONAN [message #84815 is a reply to message #84795] |
Sun, 16 May 2010 09:30 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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I may be that the float is stuck in the down position having set for a
year and all the gas evaporated out of the carb. When you try and
start the generator the fuel pumps keeps gas flowing into the carb
float bowl and not being controlled by the float and needle valve
floods the carb and chokes the engine with raw fuel. It may be that
you need to take the bowl off the carb and clean the needle valve and
set the float height.
Here is the manual: http://www.bdub.net/manuals/onanmanual.pdf
See pages 9 & 13
J.R. Wright
GMC GreatLaker
TZE Zone Restorations
77 Eleganza Custom (For Sale)
1975 Avion (Under Reconstruction)
Michigan
>
>
> I need some help here.
>
> The last time I used the generator it worked fine. It
> was not started for over a year. When it tried to start
> it it ran for about 15 seconds and quit, while it ran
> a lot of rust came out of the exhaust pipe. I cleaned the
> carb. made the correct adjustments, now it starts for
> about 2 seconds, then pours raw gas out of the carb.
>
> Any Ideas?
> --
> Rich Cortezzo
> Green Valley AZ
> 1978 Eleganza II
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] ONAN [message #84817 is a reply to message #84815] |
Sun, 16 May 2010 09:40 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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I guess that I should read the question better. Matt's answer is a
very good path to follow, disregard mine. You can use the manual for
additional data if you don't have one on hand.
J.R. Wright
GMC GreatLaker
TZE Zone Restorations
77 Eleganza Custom (For Sale)
1975 Avion (Under Reconstruction)
Michigan
> I may be that the float is stuck in the down position having set for a
> year and all the gas evaporated out of the carb. When you try and
> start the generator the fuel pumps keeps gas flowing into the carb
> float bowl and not being controlled by the float and needle valve
> floods the carb and chokes the engine with raw fuel. It may be that
> you need to take the bowl off the carb and clean the needle valve and
> set the float height.
>
> Here is the manual: http://www.bdub.net/manuals/onanmanual.pdf
> See pages 9 & 13
>
> J.R. Wright
> GMC GreatLaker
> TZE Zone Restorations
> 77 Eleganza Custom (For Sale)
> 1975 Avion (Under Reconstruction)
> Michigan
>
>
>
>>
>>
>> I need some help here.
>>
>> The last time I used the generator it worked fine. It
>> was not started for over a year. When it tried to start
>> it it ran for about 15 seconds and quit, while it ran
>> a lot of rust came out of the exhaust pipe. I cleaned the
>> carb. made the correct adjustments, now it starts for
>> about 2 seconds, then pours raw gas out of the carb.
>>
>> Any Ideas?
>> --
>> Rich Cortezzo
>> Green Valley AZ
>> 1978 Eleganza II
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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