Topic: leaky fuel tank
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
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Former Member
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Joined: 12/17/2003
Posts: 6
Vette(s): 1968 327/350hp close ratio 4 speed convertable sat in show room in michigan since 1978 both tops originally green repainted red 68k purchased from a guy who cant stop washing it in buhl idaho for 13,500 very nice
I put a full tank in that big fuel opening man did they steal that from a tanker? sorry new to vettes,,
anyway now the tank is leaking fuel from somewhere above
called the guy i bought the car from and he said it never leaked before and he always filled it full because he always did long trips, its cold here in idaho around 6 degrees now no obvious rubber leaks any ideas? thanks

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Lake Oswego, OR - USA
Joined: 12/29/2002
Posts: 355
Vette(s): 1968 Corvette T-Top Coupe, 427 L71, Rally Red Exterior, Saddle Interior
Your car may have two lines from the gas tank to the engine. One would be a return line and the rubber could be bad and causing a leak if the tank is overfilled.
I had a friend named David Stover from NW Iowa. Any chance you're the same person?
Mark
I had a friend named David Stover from NW Iowa. Any chance you're the same person?
Mark
Former Member
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Joined: 12/17/2003
Posts: 6
Vette(s): 1968 327/350hp close ratio 4 speed convertable sat in show room in michigan since 1978 both tops originally green repainted red 68k purchased from a guy who cant stop washing it in buhl idaho for 13,500 very nice
Thanks Mark, I have never been to Iowa, Small world.
FYI: the car leaks gas even with the level alot lower now.
FYI: the car leaks gas even with the level alot lower now.

Hello-
I had a similar problem with my '76 L82. I had to drop the tank & the "tortoise shell" protective cover to fix the problem. Like the last reply, it turned out to be that the rubber lines that run between the sending unit & the stationary lines on the frame rail had rotted & needed to be replaced. Five dollars worth of parts and a little bit of labor later, I was back on the road.
On a positive note... you get to see if your tank sticker is there...
I had a similar problem with my '76 L82. I had to drop the tank & the "tortoise shell" protective cover to fix the problem. Like the last reply, it turned out to be that the rubber lines that run between the sending unit & the stationary lines on the frame rail had rotted & needed to be replaced. Five dollars worth of parts and a little bit of labor later, I was back on the road.
On a positive note... you get to see if your tank sticker is there...
You did'nt say what year your car is.
78-up cars have a plastic bladder in the tank to
prevent rear end collision fires (too bad pinto and mustang designers did'nt think of this-it would have saved countless lives!) I got my 78 cheap because it
had a pinhole leak in the return line ($3 fix) that
everyone thought was a tank leak.
Steve
78-up cars have a plastic bladder in the tank to
prevent rear end collision fires (too bad pinto and mustang designers did'nt think of this-it would have saved countless lives!) I got my 78 cheap because it
had a pinhole leak in the return line ($3 fix) that
everyone thought was a tank leak.
Steve

Former Member
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BRADENTON, FL - USA
Joined: 8/4/2002
Posts: 669
Vette(s): 1972 convertible 350 auto trans, delux int, air, ps, pb, t/t wheel, pw, 79,000 org miles Rare one year only color
i had the same problem. small leak that was hard to find. wound up being a tiny pin hole where the tank sits on the support and the felt was worn out causing it. i pulled the tank and relinded it with por-15. never leaked again. i know replacement tanks are available but i'm trying to keep all the orgional stuff i can.
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Former Member
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Joined: 12/17/2003
Posts: 6
Vette(s): 1968 327/350hp close ratio 4 speed convertable sat in show room in michigan since 1978 both tops originally green repainted red 68k purchased from a guy who cant stop washing it in buhl idaho for 13,500 very nice
Garry
Thanks for the input you hit in on head small crack/pinhole where tank lands on the supprt brkt.
replaced tank with new one bagged old one and will hold on to. do you know if anyone sells a zenon bulb ie: hid conversion for a c3vr 1968?
thanks again
david stover
traveling now in eugene,or

Thanks for the input you hit in on head small crack/pinhole where tank lands on the supprt brkt.
replaced tank with new one bagged old one and will hold on to. do you know if anyone sells a zenon bulb ie: hid conversion for a c3vr 1968?
thanks again
david stover
traveling now in eugene,or
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
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