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5/15/10 4:02pm - Original Message: 'Leaking fuel line'
Moose79
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Vette(s):
79 L-82, 72K miles, burgundy

Joined: 5/27/2007
Posts: 16
Just noticed my 79 is leaking fuel on the passenger side near rear tire. What is the difficulty factor on replacing the line on my own? Do I need to drop the tank?
 
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Mike
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5/15/10 6:22pm - Reply: 'Leaking fuel line'
anips
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sonoma, CA - USA

Vette(s):
72 LT-1 AC coupe,69 l-36 coupe

Joined: 8/9/2002
Posts: 783

all you might have to do is drop the spare, on the 72 the rubber hose connects to the steel line from the sender to the steel line going forward to the fuel pump,  located at the opening at the right rear corner of the frame, dont know why they would change it, but I could be wrong, start there, if you change one change em all, good luck 



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5/15/10 10:10pm - Reply: 'Leaking fuel line'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
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The '79 is different, but the fuel lines will still go to the pass side of the frame in the rear. Jack it up(and use jack stands for safety!), and see if you can determine exactly [b\where the leak is originating. It may be a fuel line, but it may also be a hole in the tank.
The rubber lines are not that hard to change....just hard to get to. You should not have to remove the tank, but it really depends on where the leak is...


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Joel Adams
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5/15/10 11:39pm - Reply: 'Leaking fuel line'
Jaws79 Lifetime Member
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Sykesville, MD - USA

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1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

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Hey, before you do too much. check the rubber lines where they come out of the sending unit. Mine had a new clamp that broke and was causing a steady drip of gas behind the passenger rear tire. Just a thought.
 
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5/16/10 4:21pm - Reply: 'Leaking fuel line'
Moose79
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Vette(s):
79 L-82, 72K miles, burgundy

Joined: 5/27/2007
Posts: 16

I just dropped the spare and the tank seems pretty dry. Looks like the leak is in front of the rear tire where the cross member attaches to the frame, The fuel lines are right above and they feel corroded 

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5/16/10 5:40pm - Reply: 'Leaking fuel line'
Moose79
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Vette(s):
79 L-82, 72K miles, burgundy

Joined: 5/27/2007
Posts: 16

Just went looking to purchase the fuel lines and found this note on the "ZIP" website

Note: 1963-1982 gas tank to fuel pump fuel lines cannot be installed without removing the Corvette body from the frame.

IS THIS TRUE!Censored
 
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5/16/10 8:34pm - Reply: 'Leaking fuel line'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Posts: 19447
yeah....great idea, eh?
The lines, as they are run, go into the rear frame area at the kick-up. You can snake a short section in, if you want to splice a piece in, and use compression fittings. Otherwise, you'll need to pull the body up off the frame. Same deal with the brake lines, but using a compression fitting on brake lines is a no-no.
 A fuel line can get by with a compression fitting/splice, since the pressure is not very high. Actually, anything before the fuel pump has no pressure to speak of, except in the '82s.
You should, however, check the entire length of the fuel line. If it is corroded enough in one spot to be leaking, chances are it has other problem spots.


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Joel Adams
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5/16/10 8:41pm - Reply: 'Leaking fuel line'
anips
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sonoma, CA - USA

Vette(s):
72 LT-1 AC coupe,69 l-36 coupe

Joined: 8/9/2002
Posts: 783
I have not ever replaced the steel  fuel lines but by all accounts you have to raise the bodyCensored the reason is because the back 1/3 of the fuel line tucks  under the body from the rear x-member rearward, with the prebent replacement line because of all the bends its suppost to be impossible to fish it under the body because some other bend is hangin up some where, but all is not lost, I'also read that instead of useing prebent line you buy a coil of the correct dia. fuel line and use it instead and it is available, the way you do it is get the car up on jacks with plenty of room to work, uncoil the line and starting at the front of the car  fish the line rearward straightning the tubing as you go, when you get to the back it should be able to slide in between the frame and body, when you get to the back and it can't go back any more work your way back forward and make your bends as you go, make sure you have extra up front  to allow for bends, cut off the extra when your doneCool....if working by yourself its easier to uncoil the line out in front of the car about 20' of it and fish it over the suspendsion and pulling it rearward, like I said you can cut off the extra later after your bends are done, good luck.  anips2010-05-16 17:58:36

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5/16/10 10:26pm - Reply: 'Leaking fuel line'
Moose79
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Vette(s):
79 L-82, 72K miles, burgundy

Joined: 5/27/2007
Posts: 16
Silly question..... Can the body be raised without taking it completely off, I am pretty good with the  nuts and bolts stuff but raising the body is another issueWits End
 
Thanks for the inputs
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5/17/10 10:00am - Reply: 'Leaking fuel line'
Ron 78 Lifetime Member
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BINGHAMTON, NY - USA

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Joined: 7/19/2003
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Well if your not worried about originality,you can just run the new lines right along the inside of the frame rails.

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5/17/10 11:11am - Reply: 'Leaking fuel line'
VetteSpecialties
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Mounds View, MN - USA

Vette(s):
70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe

Joined: 5/24/2007
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I have seen cars with the correct fuel line bent a little to fit under the crossmember.  Make sure you fasten it securely so you don't rub through it.  As far as raising the body, it is the same amount of work to lift it far enough to get the line in as it is to take it off.  You need to disconnect everything either way.  You need to raise the body at least 18" to get the line in.

Larry


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