From: Santoken (santoken@bright.net)
Date: Tue Dec 07 2004 - 18:09:11 PST
Yeah, you called Memphis lately? They're getting rid of all their GMC
stuff...they say it's a 'collector item' now. Anyway, all they had to
help me was a rebuild kit. Yeah, I replaced the float with one I had
already. They were all out of fuel pumps...I really need the entire
fuel module assembly.
Bobby Joe Pendleton wrote:
> did you by chance check the float? They tend to crack and fill with gas
> causing the engine to flood.. Also fuel pressure should be no more than 2
> 1/2- 3 PSI, any more and the engine will flood. I got my rebuilt carb and
> fuel pump from Memphis Equipment.
>
> BjP
> "Maneo Qualis Manebam"
> ----- Original Message -----
> From: "Santoken" <santoken@bright.net>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Tuesday, 07 December, 2004 20:33
> Subject: Re: [MV] G749 GMC Carb rebuild questions
>
>
>
>>Well, after looking closely, and spending a few more hours with this
>>carb, and looking into responses from the earlier post...I'm still
>
> stumped.
>
>>So, this leads deeper, does anyone know what the fuel pressure should be
>>on a G749? You see, somehow or another I lost the original fuel pump so
>>I obtained an aftermarket Carter 24v fuel pump. It seemed to run fine
>>earlier, but I'm trying all options. The fuel pump that I installed is
>>rated for 5.5-10 psi...which from past experience should be well within
>>the required specs...but I'm not sure about this application and perhaps
>>the fuel pump is malfunctioning.
>>
>>Or better yet, does anyone have the original fuel pump, and fuel pump
>>module box they'd be willing to part with?
>>
>>Thanks!
>>
>>Santoken wrote:
>>
>>
>>>List,
>>>
>>>AT the beginning of summer, I had my M215 running sweet. When you tried
>>>to start it, you didn't even hear the starter motor run because the
>>>engine seems to start running first. It started and ran that nicely.
>>>
>>>After sitting all summer, I started it to move it and it barely started
>>>and ran horribly. It was running entirely too rich. After I got it
>>>moved, I tore into the carb. Yeah, it was running WAY too rich. Seemed
>>>that the bowl was leaking fuel down into the carb just sitting there,
>>>not doing anything. I decide to do a rebuild.
>>>
>>>After paying the horrible money for a sub-standard kit, it still does
>>>the same thing. I have had that carb on and off so many times I can't
>>>count.
>>>
>>>Is there anyone out there familiar with that Holley that could give me a
>>>few pointers? This is the most bastard carb I've ever seen and since
>>>the carb kit didn't come with any literature, I could really use some
>>>outside knowledge on it.
>>>
>>>After running the idle mixture screws bottom, and dropping the float all
>>>the way down...it runs OK...just ok. When I back the screws out, it
>>>starts faltering. Adjusting the float does the same. When the float is
>>>set to proper height, and the air-horn off, I can see fuel dribble into
>>>the carb...I can't really see where it's coming from, tho.
>>>
>>>The idle circuit appears to be fine since the idle mixtures screws seem
>>>to effect its idle quality. The bowl is not cracked and the power valve
>>>is functioning properly. The kit that I got came with new metering
>>>orifice tubes but they look nothing like the old ones, have these been
>>>redesigned to repair some known problem? The old tubes had the base
>>>crushed shut, the new ones did not...and the orifice on the new ones is
>>>MUCH smaller...surely effecting the air bleed.
>>>
>>>Has anyone else ran across this same problem?
>>>
>>>Thanks,
>>>
>>>Kent
>>>
>>>
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> <mil-veh-digest@mil-veh.org>
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>>>
>>===Mil-Veh is a member-supported mailing list===
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>
>
>
>
> ===Mil-Veh is a member-supported mailing list===
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> To switch to the DIGEST mode, send e-mail to <mil-veh-digest@mil-veh.org>
> To reach a human, contact <ack@mil-veh.org>
>
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