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Topic: Gas Tank Removal

in Forum: C3 Fuel, Emission Control, and Exhaust Systems

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Gas Tank Removal (1/21)
4/14/10 9:36pm

Jeffm
Former Member
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Sebago Lake, ME - USA

Vette(s):
1978 Silver Anniversary L82 4spd (M21) Red Leather. Pace Car is in the hands of a new caretaker.

Joined: 2/15/2007
Posts: 964

The Pace Car, which hasn't been running right since I got it last summer, is dieing when you get on it. Idles find and goes slow find. Had it in a garage and the guy rebuilt the carb, checked the pump, lines, filter and stuff. Also checked out all the elect stuff. He said only thing left is drop the tank and check that sock thing. I'm going to try that myself, so just wondering how easy it is and what to look out for. Car did sit for a long time before I got it so maybe things are gummed up. He did say the carb was a mess from old bad gas. I have a scissor lift so I can get under the back end pretty easy.
thanks for any ideas.
Jeff

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Gas Tank Removal (2/21)
4/14/10 9:50pm

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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4421

Not sure if you have to drop it?

Someone one will know for sure.

Evil Smile ebo

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Gas Tank Removal (3/21)
4/14/10 10:50pm

JC VETTE 70
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, - Canada

Vette(s):
70 VETTE 350/300HP, AUTOMATIC, ALL STOCK EXCEPT FOR MILD CAM,LAGUNA GREY, 3:55 POSI GEARS

Joined: 3/9/2008
Posts: 164

If you are referring to the strainer (sock thing) i replaced mine without removing the tank. I removed all the fuel from the tank, I got my 13 year old son to stick his small hand into the tank LOL

LOL

he reached down to the strainer removed the old one and put the new one on. If the car was in storage for a long period of time, you should remove all the old fuel.

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Gas Tank Removal (4/21)
4/14/10 10:54pm

indy99
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Newport, MI - USA

Vette(s):
1980 L-48 still in the middle of a frame-off.

Joined: 6/9/2005
Posts: 932

You should be able to remove the fuel sending unit and pick-up from the top of the tank. Make sure you have good connections when you put it back together.

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Corvettes and women are the same...You want to make love to them but they keep breaking down.

Gas Tank Removal (5/21)
4/15/10 11:47am

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Manteca, CA - USA

Vette(s):
1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed

Joined: 11/20/2005
Posts: 3623

If you "Chromie' guys can remove the sending unit without dropping the tank, then you're very lucky. Somewhere along the line GM made the fuel door opening too small to pull the sender through on the late models Cry

Cry

. Before you drop the tank, remove the rubber boot surrounding the filler hole and inspect the 2 short hoses to the right (if not already done), they are famous for sucking air if they've never been changed yet. You can tell by looking.

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Jimmy B.
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Gas Tank Removal (6/21)
4/15/10 11:51am

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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2552

Have you had the advance, timing checked out? Bad gas will give you problems at all speeds, but low volume will show up on acceleration. One thing at a time, good luck with it.

Dave

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Dave's '82

Gas Tank Removal (7/21)
4/15/10 12:54pm

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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
Posts: 20128

The earlier cars, from '68-'75(or so) had the sending unit on the bottom of the tank. The later cars have it on the top of the tank. The '82 cars I think you can get the unit out without pulling the tank, but the other ones require tank removal...

If you have an air compressor, you can pull the fuel line off of the fuel pump, and blow back into the tank(take the gas cap off first!). If the sock is really stopped up, it will blow it off of the end of the sender. If it has some crap on it, it may blow enough of that off to see if the performance improves any. If it does, then I would pull the tank and replace the sock. If you hear a loud "pop" when blowing back thru the line, then the sock was stopped up, and blew off of the end of the sender. In that case, you would still need to remove the tank to install a new one, and prolly clean the tank while it's off.

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Gas Tank Removal (8/21)
4/15/10 6:40pm

Jeffm
Former Member
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Sebago Lake, ME - USA

Vette(s):
1978 Silver Anniversary L82 4spd (M21) Red Leather. Pace Car is in the hands of a new caretaker.

Joined: 2/15/2007
Posts: 964

Looks like some good advise. I'll be right on this Saturday morning. That is, right after my weekend coffee run in the SA if it ain't raining or snowing Wits End

Wits End

as they say it might do.

Gas Tank Removal (9/21)
4/15/10 7:52pm

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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4421

Jeff jump on 95 and follow me to Myrtle we have room in the condo, leavin in 7hrs.

Evil Smile ebo

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Gas Tank Removal (10/21)
4/15/10 9:51pm

Jeffm
Former Member
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Sebago Lake, ME - USA

Vette(s):
1978 Silver Anniversary L82 4spd (M21) Red Leather. Pace Car is in the hands of a new caretaker.

Joined: 2/15/2007
Posts: 964

[QUOTE=ebo]

Jeff jump on 95 and follow me to Myrtle we have room in the condo, leavin in 7hrs.

Evil Smile ebo

[/QUOTE]
Al, You just said somewhere else that you hate 95. You trying to get me killed or something. LOL

LOL

We been down on the ocean all week, unfortunately it's on a roof putting down shingles.

Gas Tank Removal (11/21)
4/16/10 9:55am

crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094

Yep, as Joel stated above the 82 "in tank" pump and sending unit can be removed through the fill hole in the body of the car without tank removal once the filler door and ring are removed from the hole. It takes some twisting and turning and a good sprinkling of blue language but it will come out when you get the thing turned just the right way. The sending unit for your 78 looks very much like the one for the 82 with the exception that the 82 has the fuel pump attached. Id go ahead and order a new sending unit gasket and replace that while I was there.

Crossfire19822010-04-16 06:57:59

Gas Tank Removal (12/21)
4/16/10 8:18pm

Jeffm
Former Member
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Sebago Lake, ME - USA

Vette(s):
1978 Silver Anniversary L82 4spd (M21) Red Leather. Pace Car is in the hands of a new caretaker.

Joined: 2/15/2007
Posts: 964

Got home from work and had a little bit of energy left so I figured what the heck I'll just drop the tank. About 2 hours and I had it on the bench. Tomorrow I'll open it up and see how nasty it looks down in there. Jimmy, those short rubber lines on the top of the tank did look pretty bad, all dried out. Whats that thing to the left that the single hose goes to?
Also, I got the build sheet. Sitting right on top of the tank. Big smile

Big smile

Gas Tank Removal (13/21)
4/16/10 8:32pm

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Scotch Plains, NJ - USA

Vette(s):
1981 Corvette Coupe, Stock, Black on Black, 4 Spd

Joined: 1/11/2006
Posts: 230

Hey, finding the Build Sheet is like finding gold or something!

What shape is it in, can you read it ?

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Gas Tank Removal (14/21)
4/17/10 10:29pm

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Manteca, CA - USA

Vette(s):
1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed

Joined: 11/20/2005
Posts: 3623

[QUOTE=Jeffm] Jimmy, those short rubber lines on the top of the tank did look pretty bad, all dried out. Whats that thing to the left that the single hose goes to?Also, I got the build sheet. Sitting right on top of the tank. Big smile

Big smile

[/QUOTE]

Sorry Jeff. Got hung up for a couple of days. What a refreshing change for me. On the right is the pickup and return line, can't think of anything else it might be besides a vent tube. I'll take a look tomorrow.

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Jimmy B.
Just can't wait to get on the road again.

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Gas Tank Removal (15/21)
4/18/10 12:32pm

DStoffel
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Wampum, PA - USA

Vette(s):
1999 coupe Magnetic Red /w grey interior 30,000 miles.

Joined: 8/27/2008
Posts: 90

The tube on the left is a vent that goes into the charcoal cannister.

Dave

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Gas Tank Removal (16/21)
4/18/10 1:43pm

dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1958

Looking on E-Bay and here, seems to be alot of 1981's in New York and Jersey !! Whys is that, I wonder??

Dan

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Gas Tank Removal (17/21)
5/6/10 6:10pm

Jeffm
Former Member
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Sebago Lake, ME - USA

Vette(s):
1978 Silver Anniversary L82 4spd (M21) Red Leather. Pace Car is in the hands of a new caretaker.

Joined: 2/15/2007
Posts: 964

Finally got her all back together. Dumped a 5 gal can of gas in and fired her up. Took her for a nice ride and ran like a champ. Big smile

Big smile

Replaced the sock in the tank and just for kicks the 2 rubber lines at the pump, but I'm sure it was the sock all clogged up with old gas and crap. I'm glad I had the carb rebuilt anyway. The guy showed me all the gaskets and stuff and they looked pretty bad. Starts and idles a lot better than the Silver Ann so I think that one's in line for a carb rebuild also.
Just wanted to give an update on another C3 success story. Approve

Approve

Thanks everyone for the help and suggestions.

Jeffm2010-05-06 15:13:19

Gas Tank Removal (18/21)
5/6/10 9:33pm

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Manteca, CA - USA

Vette(s):
1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed

Joined: 11/20/2005
Posts: 3623

Too cool

Cool

. That's what we like to hear Clap

Clap

.

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Jimmy B.
Just can't wait to get on the road again.

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Gas Tank Removal (19/21)
5/6/10 10:50pm

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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
Posts: 20128

Dontcha just love it when a plan comes together?
Good job, and Congrats, Jeff! Clap

Clap

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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Gas Tank Removal (20/21)
5/7/10 8:47pm

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North Charleston, SC - USA

Vette(s):
1975 L48 AT AC T-top

Joined: 3/20/2004
Posts: 4176

Doesn't feel great when you immediately see/feel the fruits of your labor. Great Job!

Scott

Gas Tank Removal (21/21)
5/8/10 10:41am

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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2552

Way to go Jeff Clap

Clap

. Glad everything came out on the plus side for you.

Dave

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Dave's '82

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