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Re: [GMCnet] Onan Not Starting... [message #166616 is a reply to message #166607] Tue, 17 April 2012 11:30 Go to previous messageGo to previous message
Kudzu is currently offline  Kudzu   United States
Messages: 377
Registered: November 2011
Location: Marshville, NC
Karma:
Senior Member
Do you mean 5 and 9? I jump them and hear the pump or at least a rapid clicking just above the circuit board. Nothing coming out of the hose. The hose itself seems uninstructed, so maybe it is an air leak somewhere. From the fuel tank to the genny is all new.

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On Apr 17, 2012, at 11:40 AM, Dennis Sexton <dennisfsexton@aol.com> wrote:

>
>
> Dan,
>
> Looks like you have a cube shaped fuel pump -- not the Facet up and down model that was original to the Onan. The original had a filter in the bottom.
>
> So I would agree with Bob -- you may either have a major air leak or an obstruction in the line from the fuel tank to the pump.
>
> With your current set-up -- jumping 4 and 9 you would have fuel coming from 2 in your picture.
>
> Dennis
>
>
> Kudzu wrote on Tue, 17 April 2012 10:32
>> When I jump 5 and 9, I can hear the pump clicking/whirling, yes. But I
>> don't think I hear it when it is cranking - hard to tell it is pretty
>> loud. I'll get under and see if something else has changed. It ran
>> before and other than gas level, nothing has changed. Thanks!
>>
>> Dan in NC
>> Caregiver to a 1976 Eleganza II
>> "Tzetze Fly"
>>
>> On 4/17/2012 11:28 AM, Bob de Kruyff wrote:
>>>
>>> ""1. New fuel pump.
>>> 2. End of fuel line. Has the start of some splitting but it looks like
>>> it is holding a seal - I'll replace it anyway.
>>> 3. Connection into the filter. Holding my finger over this, there is no
>>> suction at all when cranking.
>>> 4. Choke? What position is full choke, should I be dinking with this
>>> when trying to start?
>>> 5. Throttle. When I push this, the motor cranks faster but still doesn't
>>> catch.
>>>
>>> Thanks for any suggestions.
>>>
>>> ""
>>>
>>> Sure sounds like lack of fuel. The number 3 on your picture is the input to the carburetor so you shouldn't expect suction but rather some pressure. I believe the choke is closed by rotating it counter clockwise and you can play with that a bit but yiou should have fuel spurting out of the hose end number 2. I wouldn't fool with the throttle. I'm guessing your input to the fuel pump is restricted or sucking air--it's not visible in your picture. That line runs from the fuel pump, down through a fitting in the floor or bottom of the the metal housing that is bolted to the frame. From there it goes to the fuel tank. I would look all of that over closely. Can you hear the pump clicking?
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>
> --
> Dennis S
> 73 Painted Desert 230
> Germantown, TN
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1976 Eleganza II 1996 Chevy Impala SS 1999 Kawasaki Vulcan Nomad

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