About tanks and lines for Larry C

Matt Colie

Well-known member
Aug 15, 2008
11,101
807
113
South East Michigan near DTW
Quote:
> ATOM ANT
> Did you find any instruction on how to convert over from the rubber hose above the tanks, if so can you share?
>
> I've fought a power loss problem over a very long period of time (years) at high cost to find and it seems to be going back to the fuel line
> replacements. We have one more test that will happen soon as the engine runs fine with the outboard gas can connected to the carb. Inspection of the
> VISIBLE system looks good back to the new fuel solenoid.
>
> my final test will be to connect the generator fuel source to the engine fuel pump. IF SUCCESSFUL, I will have to drop the tanks to see if the
> fuel lines are crushed.
>
> It's been a long darn haul to get here and I have to admit, I've lost a lot of the spirit for the GMC.
>
> I am thinking metal lines would be less able to be crushed and starve fuel to the engine if this is the actual root of the problem.
>
> thanks for any thoughts, as well to everyone else who over the years have offered thoughts of help. I cannot thank you all enough for your help in
> the past, and possibly in the future, even yet.
>
> GatsbysCruiser

Larry,

My fuel lines were actually not that old, but they were cracked so as to only leaks when the tank was over full but enough to let air into the system
all the time. Also and just to add to the interest, the fill vent line up in the frame rail literally came down in pieces.

I have lost track of the best pictures. They were good close ups of the how to cut the bulge off and put compression unions on the sending unit and
attach metal lines. I think those were Emery's but I sure can't find them now. I do have a picture for you at:
http://www.gmcmhphotos.com/photos/fuel-tank-lines/p61891-fuel-tank-lines.html

This is how I attached all the metal lines to my tanks. The last I had to mess with this was about 8 years and 50k miles back. I did enough then to
make me certain I did not over-do any of it as I have not had to do any of it again.

I also have two recommendations of reading for you from a guy (yours truly) that had the misfortuate opportunity to learn a lot about getting GMC
tanks down and back up with a minimum of drama. The second is a mod that you should do while you are there. The best thing to do would be to search
out and read all of both threads.


Recommending High T, 29 July 2012 21:06
lifting fuel tanks when alone 27 June 2012 10:06

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Still Loving OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
Been there Larry. Hang in there.

Sully
77 eleganza 2
Seattle

> Quote:
> > ATOM ANT
> > Did you find any instruction on how to convert over from the rubber hose
> above the tanks, if so can you share?
> >
> > I've fought a power loss problem over a very long period of time (years)
> at high cost to find and it seems to be going back to the fuel line
> > replacements. We have one more test that will happen soon as the engine
> runs fine with the outboard gas can connected to the carb. Inspection of the
> > VISIBLE system looks good back to the new fuel solenoid.
> >
> > my final test will be to connect the generator fuel source to the engine
> fuel pump. IF SUCCESSFUL, I will have to drop the tanks to see if the
> > fuel lines are crushed.
> >
> > It's been a long darn haul to get here and I have to admit, I've lost a
> lot of the spirit for the GMC.
> >
> > I am thinking metal lines would be less able to be crushed and starve
> fuel to the engine if this is the actual root of the problem.
> >
> > thanks for any thoughts, as well to everyone else who over the years
> have offered thoughts of help. I cannot thank you all enough for your help
> in
> > the past, and possibly in the future, even yet.
> >
> > GatsbysCruiser
>
> Larry,
>
> My fuel lines were actually not that old, but they were cracked so as to
> only leaks when the tank was over full but enough to let air into the system
> all the time. Also and just to add to the interest, the fill vent line up
> in the frame rail literally came down in pieces.
>
> I have lost track of the best pictures. They were good close ups of the
> how to cut the bulge off and put compression unions on the sending unit and
> attach metal lines. I think those were Emery's but I sure can't find them
> now. I do have a picture for you at:
>
> http://www.gmcmhphotos.com/photos/fuel-tank-lines/p61891-fuel-tank-lines.html
>
> This is how I attached all the metal lines to my tanks. The last I had to
> mess with this was about 8 years and 50k miles back. I did enough then to
> make me certain I did not over-do any of it as I have not had to do any of
> it again.
>
> I also have two recommendations of reading for you from a guy (yours
> truly) that had the misfortuate opportunity to learn a lot about getting GMC
> tanks down and back up with a minimum of drama. The second is a mod that
> you should do while you are there. The best thing to do would be to search
> out and read all of both threads.
>
>
> Recommending High T, 29 July 2012 21:06
> lifting fuel tanks when alone 27 June 2012 10:06
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Still Loving OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
> Been there Larry. Hang in there.
>
> Sully
> 77 eleganza 2
> Seattle

>
> > Quote:
> > > ATOM ANT
> > > Did you find any instruction on how to convert over from the rubber
> hose
> > above the tanks, if so can you share?


Read here
http://www.gmcmhphotos.com/photos/data/4634/Dropping_the_tanks1.pdf

> > >
> > > I've fought a power loss problem over a very long period of time
> (years)
> > at high cost to find and it seems to be going back to the fuel line
> > > replacements. We have one more test that will happen soon as the engine
> > runs fine with the outboard gas can connected to the carb. Inspection of
> the
> > > VISIBLE system looks good back to the new fuel solenoid.


Read here


> > >http://www.gmcmhphotos.com/photos/data/4634/Dropping_the_tanks1.pdf
> > > my final test will be to connect the generator fuel source to the
> engine
> > fuel pump. IF SUCCESSFUL, I will have to drop the tanks to see if the
> > > fuel lines are crushed.
> > >
> > > It's been a long darn haul to get here and I have to admit, I've lost a
> > lot of the spirit for the GMC.
> > >
> > > I am thinking metal lines would be less able to be crushed and starve
> > fuel to the engine if this is the actual root of the problem.
> > >
> > > thanks for any thoughts, as well to everyone else who over the years
> > have offered thoughts of help. I cannot thank you all enough for your
> help
> > in
> > > the past, and possibly in the future, even yet.
> > >
> > > GatsbysCruiser
> >
> > Larry,
> >
> > My fuel lines were actually not that old, but they were cracked so as to
> > only leaks when the tank was over full but enough to let air into the
> system
> > all the time. Also and just to add to the interest, the fill vent line
> up
> > in the frame rail literally came down in pieces.
> >
> > I have lost track of the best pictures. They were good close ups of the
> > how to cut the bulge off and put compression unions on the sending unit
> and
> > attach metal lines. I think those were Emery's but I sure can't find
> them
> > now. I do have a picture for you at:
> >
> >
> http://www.gmcmhphotos.com/photos/fuel-tank-lines/p61891-fuel-tank-lines.html
> >
> > This is how I attached all the metal lines to my tanks. The last I had
> to
> > mess with this was about 8 years and 50k miles back. I did enough then
> to
> > make me certain I did not over-do any of it as I have not had to do any
> of
> > it again.
> >
> > I also have two recommendations of reading for you from a guy (yours
> > truly) that had the misfortuate opportunity to learn a lot about getting
> GMC
> > tanks down and back up with a minimum of drama. The second is a mod that
> > you should do while you are there. The best thing to do would be to
> search
> > out and read all of both threads.
> >
> >
> > Recommending High T, 29 July 2012 21:06
> > lifting fuel tanks when alone 27 June 2012 10:06
> >
> > Matt
> > --
> > Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> > Still Loving OE Rear Drum Brakes with Applied Control Arms
> > SE Michigan - Twixt A2 and Detroit
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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