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CorvetteforumC3 CorvettesGas Tank Capacity Problems. (a little long, but good info) |

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DaBo
Senior Member

852 posts [100%]
I ran over TOTO with my truck.

Gas Tank Capacity Problems. (a little long, but good info) | 9:20 AM 5/29/2002 |

For the owners of 76' an up Vettes who are having fuel fill and/or mileage range problems......This is for you!!!!

I have owned my 76' for almost 4 years. After about the first year and a half I started to have problems with fuel range from a full tank of gas. One day I ran out of gas even though the gauge read that I had a half tank. I got to the station and filled it up but it only took about 5-6 gallons.
I did some research and found that in 76 GM put heavy rubber bladders in the tanks. Over the years these bladders would collapse and you could not fill you tank to full capacity.
I drove mostly in town so I let it go and figured out that I could get about 100-120 miles from a tank and then "fill" it back up. Usually took 4-6 gallons per "fill".
This past weekend the wife and I took both Corvettes to Kansas City for the Hot Rod Power Tour. All was fine until the trip home. We had only gone about 30-35 miles on the last "fill" and the 76' ran out of gas.
Today, I dropped the tank in the 76' and this is what I found. Exactly what I had expected, the bladder had completely collapsed and was stuck onto the float for the gauge.
I knew almost 100% that this is what I would find but I just put off doing anything about it.
Now, I am able to pass this info on to any others that are having the same problems, but did not know what was wrong. I do not remember all the years that the liner was used. It may have started in 75. I am sure other members will share there experiance with these gas tank problems and solutions.
I am going to have the tank spray lined on the inside then reinstall it.

_______

DaBo
ALWAYS! 'N
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Check out my page. Click this link.http://temp.corvetteforum.net/c3/76dabo62/

Markm10431
Senior Member

32 posts [100%]
Jacksonville FL

Re: Gas Tank Capacity Problems. (DaBo) | 9:30 AM 5/29/2002 |

Grat info! Thanks from a newbie who would have paniked

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