| [GMCnet] Fuel pump for "Money Pit" [message #79316] |
Mon, 05 April 2010 09:27  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I'm now pretty sure that Money Pit's fuel pump is
leaking as I smell raw gasoline almost constantly.
Does anybody have a part number and favorite
source for same?
* D C "Mac" Macdonald *
** Oklahoma City, OK **
* "Money Pit" 76 x-PB *
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #79323 is a reply to message #79316] |
Mon, 05 April 2010 09:43  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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You want the M6108 (OEM part #) fuel pump. Airtex was a popular
brand. You can use the M6109 pump but it has a return line that need
to go back to the fuel tank.
This is available from Autozone
< http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?itemIdentifier=47373_0_0_&skuDescription=Airtex+Master+/+Fuel+Pump&brandName=A irtex+Master&displayName=Fuel+Pump&categoryNValue=&sortType=&store=2157&isSearchByPartNumber=&fromWhere=&fromString=&c ounter=0&itemId=78-0&navValue=14900078&filterByKeyWord=&productId=47373&searchText=&categoryDisplayName=Fuel+Delivery&pare ntId=49-0
>
or
http://tinyurl.com/yav6ubu
J.R. Wright
GMC GreatLaker
TZE Zone Restorations
77 Eleganza Custom (For Sale)
1975 Avion (Under Reconstruction)
Michigan
>
> I'm now pretty sure that Money Pit's fuel pump is
> leaking as I smell raw gasoline almost constantly.
>
> Does anybody have a part number and favorite
> source for same?
>
>
> * D C "Mac" Macdonald *
> ** Oklahoma City, OK **
> * "Money Pit" 76 x-PB *
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #79337 is a reply to message #79316] |
Mon, 05 April 2010 12:48 |
Charles
Messages: 455
Registered: January 2004
Karma: 0
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Senior Member |
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Mac,
Smelling Gasoline in a GMC is quite common.
Generally right after filling the tanks and often every time you
hit the brakes hard as long as there is fuel in the fill tube.
I attribute this to poor venting. Others will have other opinions.
If you don't see gasoline around your fuel pump the problem
is probably not there. Have you installed an electric pump yet?
Charles
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Charles Wersal
Duncanville, Texas
26 foot 1975 Glenbrook
Pandora's Box
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #79366 is a reply to message #79316] |
Mon, 05 April 2010 17:40 |
jknezek
Messages: 1057
Registered: December 2007
Karma: 5
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I had no luck with the aftermarket suppliers for the fuel pumps. Got a Napa and an Autozone and neither worked right. One had bad threads and one just seized after 20 seconds. I'd stick with a Delco if you can get your hands on it.
Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #79371 is a reply to message #79316] |
Mon, 05 April 2010 18:00 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| k2gkk wrote on Mon, 05 April 2010 09:27 |
I'm now pretty sure that Money Pit's fuel pump is
leaking as I smell raw gasoline almost constantly.
Does anybody have a part number and favorite
source for same?
* D C "Mac" Macdonald *
** Oklahoma City, OK **
* "Money Pit" 76 x-PB *
|
About 7 years ago I just went to AutoZone and got one for a 1975 Toronado. I believe it was Airtex part number 40736. I has worked well for 7 years now.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #79388 is a reply to message #79371] |
Mon, 05 April 2010 20:59 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| Ken Burton wrote on Mon, 05 April 2010 16:00 |
| k2gkk wrote on Mon, 05 April 2010 09:27 |
I'm now pretty sure that Money Pit's fuel pump is
leaking as I smell raw gasoline almost constantly.
|
About 7 years ago I just went to AutoZone and got one for a 1975 Toronado. I believe it was Airtex part number 40736. I has worked well for 7 years now.
|
Just make sure you specify "NO Air Conditioning." The one for the Toronado with AC has a return outlet not used on our coaches.
BTDT
Just after I got my '73, the fuel pump started leaking (dripping) onto the ground whenever I turned off the motor. During the replacement I broke the hard fuel line and broke off a thermostat housing bolt.
-- BUT --
Fuel smells can come from several different sources. Cracked and dry fuel and vent lines, non-sealing gas cap and even carburetor leaking into the intake. (Had all of these.) Another big one is the stock exhaust cross-over "boiling" the fuel out of the float bowl. (Still have this one.)
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] Fuel pump for "Money Pit" [message #89002 is a reply to message #79371] |
Thu, 17 June 2010 13:36 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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I have that pump too. Have not installed it yet because it has the extra return tube. I haven't checked to see if the GMC has the return line to the tank. does it? (1977 455 with CA emissions)
| Ken Burton wrote on Mon, 05 April 2010 16:00 |
| k2gkk wrote on Mon, 05 April 2010 09:27 |
I'm now pretty sure that Money Pit's fuel pump is
leaking as I smell raw gasoline almost constantly.
Does anybody have a part number and favorite
source for same?
* D C "Mac" Macdonald *
** Oklahoma City, OK **
* "Money Pit" 76 x-PB *
|
About 7 years ago I just went to AutoZone and got one for a 1975 Toronado. I believe it was Airtex part number 40736. I has worked well for 7 years now.
|
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #89010 is a reply to message #89002] |
Thu, 17 June 2010 14:40 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""I have that pump too. Have not installed it yet because it has the extra return tube. I haven't checked to see if the GMC has the return line to the tank. does it? (1977 455 with CA emissions)
""
Nope
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #89031 is a reply to message #89025] |
Thu, 17 June 2010 16:06 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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The pump with the return line is for a Toronado WITH air condtioning. It's
NOT for a GMC. The NAPA part numbers for the two pumps is only one digit
different.
But that brings up and interesting question in view of the recent spate of
vapor lock problems. Has anyone tried adding a return line, either to the
fuel fill pipe or to one of the tanks, and using that mechanical pump with
the return line? That's undoubtedly why the air conditioned Toronados used
it -- to correct a vapor lock problem.
Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com
On Thu, Jun 17, 2010 at 4:37 PM, Denis Leconte <denis_leconte@yahoo.com>wrote:
> Same here, 1977 with CA emissions and I can definitely say that I couldn't
> find a return line. There is a feed line and the line from the canisters,
> that is all. I checked, because the only pump I have to put in is also the
> 3-tube one - I am actually wondering if tying off the return tube is a legit
> solution (and whether that is an automatic fail on the smog check).
>
> --- On Thu, 6/17/10, Chris Choffat <cchoffataz@yahoo.com> wrote:
> > I have that pump too. Have not installed it yet because it
> > has the extra return tube. I haven't checked to see if the
> > GMC has the return line to the tank. does it? (1977 455 with
> > CA emissions)
>
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #89034 is a reply to message #79316] |
Thu, 17 June 2010 16:31 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Senior Member |
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I was thinking the same thing, as why would Air Conditioning have anything to do with it other than more heat under the hood.
Maybe I will attach to a tee in the vent line up near the filler. Just hafta figure out which one is the innie and which one is the return. The carb output is the easy one here.
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #89035 is a reply to message #89031] |
Thu, 17 June 2010 16:38 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""But that brings up and interesting question in view of the recent spate of
vapor lock problems. Has anyone tried adding a return line, either to the
fuel fill pipe or to one of the tanks, and using that mechanical pump with
the return line? That's undoubtedly why the air conditioned Toronados used
it -- to correct a vapor lock problem.
""
It's an interesting thought, but I would think that may work if the vapor lock is occuring before or in the pump but not if the major problem is after the fuel pump.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #89048 is a reply to message #89031] |
Thu, 17 June 2010 18:06 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""The pump with the return line is for a Toronado WITH air condtioning. It's
NOT for a GMC. The NAPA part numbers for the two pumps is only one digit
different.""
I confused about the 3 port fuel pumps. If you check any of the parts houses and references, there is never any mention of a 3 port pump for Toronados. When A/C became standard in 1977, the fuel pump was still only the 2 port pump as it appeared to be all the way back to 1973. Where did this with and without A/C thing originate?
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Fuel pump for "Money Pit" [message #89054 is a reply to message #89048] |
Thu, 17 June 2010 20:27 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Bob,
Methinks we're seeing simplification of inventory for old vehicles. I
repeated your search for the different pumps at my favorite sites (ACDelco &
RockAuto & AZ & NAPA) -- only one 2-port version available at any of them.
Remembering standing at the counter of NAPA in Morristown, TN several years
ago looking at both 2 & 3 port pumps, I searched my GMail archive.
In '07 the following numbers were posted as coming from the then-current
GMCMI Interchange List:
---------------------------------------------------
Napa ( 2 line pump # NFP M-6108 )
AC (455) # 41566
AC (455) has by-pass to gas tank # 41567
Napa ( 3 line pump - for return line) # NFP M-6109
---------------------------------------------------
The current NAPA number is not at all similar to those above. ACDelco no
longer lists a pump for Toronado.
How we associated the 3-port with A/C, I don't recall, but it wasn't
arbitrary.
Someone needing a 3-port pump may be out of luck.
Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com
On Thu, Jun 17, 2010 at 7:06 PM, Bob de Kruyff <NEXT2POOL@aol.com> wrote:
>
>
> ""The pump with the return line is for a Toronado WITH air condtioning.
> It's
> NOT for a GMC. The NAPA part numbers for the two pumps is only one digit
> different.""
>
> I confused about the 3 port fuel pumps. If you check any of the parts
> houses and references, there is never any mention of a 3 port pump for
> Toronados. When A/C became standard in 1977, the fuel pump was still only
> the 2 port pump as it appeared to be all the way back to 1973. Where did
> this with and without A/C thing originate?
>
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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