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Coach wont start.... [message #222766] Mon, 16 September 2013 20:59 Go to next message
quadracerx1 is currently offline  quadracerx1   United States
Messages: 207
Registered: April 2013
Location: Puyallup, Washington
Karma: 1
Senior Member
I found I have a coach that wont start!

I traced it to a fuel delivery problem, the rubber fuel lines back by the tanks are leaking!

Ill need to replace them, so does anyone have a diagram of the fuel line routing, rubber line locations, etc.?

How hard is it to drop the tank(s)?

Thanks for the help....

Steve

PS. Replaced the clutch fan, radiator hoses, belts and have most of the cabinets removed for headliner replacement. Man, this is a slow process....

LOL


75 26' GMC Glenbrook Puyallup, Washington
Re: Coach wont start.... [message #222772 is a reply to message #222766] Mon, 16 September 2013 21:35 Go to previous messageGo to next message
gbarrow2 is currently offline  gbarrow2   United States
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Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
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Senior Member
Steve,
You don't need a schematic drawing; you have the real deal right in front of you.
Just remove the old as you replace with the new.

You don't have to remove the tanks but you will have to lower the front of each tank in order to reach the vent and pickup tubes.

Cracked and leaking hoses alone will probably not prevent the engine from starting. You may have something else going on also.

You can verify this easily by using a short hose and an external gas can to pump from. Or just spraying a bit of brake cleaner or starting fluid into the carb while cranking.


Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
Re: Coach wont start.... [message #222774 is a reply to message #222766] Mon, 16 September 2013 21:44 Go to previous messageGo to next message
quadracerx1 is currently offline  quadracerx1   United States
Messages: 207
Registered: April 2013
Location: Puyallup, Washington
Karma: 1
Senior Member
The engine will run with starting fluid and I pulled vacuum on the pump it had 20 psi. So I pressurized the tanks with air and found a leak. I tried to pull fuel through the lines with a vacuum pump and fuel wouldn't pull....

So the lines need to be replaced regardless because of the leaking.... I'm hoping the coach will start once that's done...

Fingers crossed....

Thanks...

Steve


75 26' GMC Glenbrook Puyallup, Washington
Re: Coach wont start.... [message #222784 is a reply to message #222766] Mon, 16 September 2013 22:53 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
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Registered: January 2009
Location: Tucson, AZ.
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Senior Member

quadracerx1 wrote on Mon, 16 September 2013 18:59

I found I have a coach that wont start!

I traced it to a fuel delivery problem, the rubber fuel lines back by the tanks are leaking!

Ill need to replace them, so does anyone have a diagram of the fuel line routing, rubber line locations, etc.?

How hard is it to drop the tank(s)?

Thanks for the help....

Steve

PS. Replaced the clutch fan, radiator hoses, belts and have most of the cabinets removed for headliner replacement. Man, this is a slow process....

LOL



Steve,

I did that job a few years ago (wrong - according to one of the "experts" here, but it has worked perfectly ever since). It's really not difficult. Here is an album I did on it, hope it helps:

http://www.gmcmhphotos.com/photos/g5520-gas-tank-fuel-line-project-6-10.html


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: Coach wont start.... [message #222798 is a reply to message #222766] Tue, 17 September 2013 07:53 Go to previous messageGo to next message
lqqkatjon is currently offline  lqqkatjon   United States
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Registered: October 2010
Location: St. Cloud, MN
Karma: 5
Senior Member
took me two days to do my fuel lines. but I did not work that hard. I could of done it in one day easy.

most of the hard work is getting it jacked up, or on ramps, or off the ground so a person can get under there and get the tanks to drop down.

empty, they were bulky, but I did not think too heavy. I dropped them all by myself, on to my self, then over to the ground, then put them on a creeper to pull out from underneath.

I am a smaller person, so it was also easy for me to work under there, and get the lines in place on top of the tanks before I lifted them finally into their resting place.


just use penetrating oil, and be careful not to break the hanger bolts, if they are rusty.



Jon Roche 75 palm beach EBL EFI, manny headers, Micro Level, rebuilt most of coach now. St. Cloud, MN http://lqqkatjon.blogspot.com/
Re: Coach wont start.... [message #222800 is a reply to message #222766] Tue, 17 September 2013 07:59 Go to previous messageGo to next message
George Beckman is currently offline  George Beckman   United States
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Registered: October 2008
Location: Colfax, CA
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Senior Member
quadracerx1 wrote on Mon, 16 September 2013 18:59

I found I have a coach that wont start!

I traced it to a fuel delivery problem, the rubber fuel lines back by the tanks are leaking!

Ill need to replace them, so does anyone have a diagram of the fuel line routing, rubber line locations, etc.?

How hard is it to drop the tank(s)?

Thanks for the help....

Steve

PS. Replaced the clutch fan, radiator hoses, belts and have most of the cabinets removed for headliner replacement. Man, this is a slow process....

LOL


Some great tips were given. I only add that getting the gas out befor you start this is a pain. Pumped and then drained loooots of gas. Put it I in tractors, etc.

Then after you drain it all, there will be about 400 gallons when you first tip one. Be prepared.


'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
Re: [GMCnet] Coach wont start.... [message #222814 is a reply to message #222800] Tue, 17 September 2013 08:49 Go to previous message
Mr ERFisher is currently offline  Mr ERFisher   United States
Messages: 7117
Registered: August 2005
Karma: 2
Senior Member
>
> replace all the rubber lines with steel
>
- the vent lines are more critical than the gas lines
- they cannot be replaced from the bottom
- http://gmc49ers.blogspot.com/

gene


>
> Some great tips were given. I only add that getting the gas out befor you
> start this is a pain. Pumped and then drained loooots of gas. Put it I in
> tractors, etc.
>
> Then after you drain it all, there will be about 400 gallons when you
> first tip one. Be prepared.
>
> --
> '74 Eleganza, SE, Howell + EBL
> Best Wishes,
> George
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Gene Fisher -- 74-23,77PB/ore/ca
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