71 gas tank vent help
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Heel & Toe
Joined: Aug 2016
Posts: 17
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From: florida
71 gas tank vent help
anybody have the connection spot for the passenger side vent hole onthe 1971 gas tank, it runs up in eng compartment via steel tube. Im guessing its connected to the bowl vent on carb. running an elderbrock carb.
Le Mans Master
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Melting Slicks
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I believe the vapor line from the gas tank to the charcoal canister is on the drivers side and the gas return line in on the the passenger side. There should be three lines on the canister. One to the carb, one to the pvc line and one to the gas tank.
Highway Man
Joined: Apr 2019
Posts: 445
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From: Ca
I was just working on this on my 1971 today.
It looks like 72 is the same.
http://repairs.willcoxcorvette.com/1...coal-canister/
Cheers,
Richard
It looks like 72 is the same.
http://repairs.willcoxcorvette.com/1...coal-canister/
Cheers,
Richard
Last edited by Kidster71; Jan 19, 2020 at 12:57 AM.
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Thread Starter
Heel & Toe
Joined: Aug 2016
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From: florida
the canister is on the drivers side, its connected to a vent hole on the driver side of the gas tank through a little black box mounted on top of the tank not sure of the correct term ecklers calls it. Anti spill device may be. it runs the length of the frame via steel tube to the canister. Im trying to find the vent line connection that exits the gas tank on the passenger side of the gas tank vent and runs up the pass side frame via steel tube and ends outboard of the exhaust bank on passenger side. it doesn't seem practical to jump over to the other side from there.
Le Mans Master
Joined: Apr 2001
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From: Was New Orleans but swam to Baton Rouge LA
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the canister is on the drivers side, its connected to a vent hole on the driver side of the gas tank through a little black box mounted on top of the tank not sure of the correct term ecklers calls it. Anti spill device may be. it runs the length of the frame via steel tube to the canister. Im trying to find the vent line connection that exits the gas tank on the passenger side of the gas tank vent and runs up the pass side frame via steel tube and ends outboard of the exhaust bank on passenger side. it doesn't seem practical to jump over to the other side from there.
Race Director
Joined: Oct 2008
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From: Long Island
Passenger side is the return line from the pump to help stop vapor lock, The left side ( drivers) side goes through a liquid / vapor separator, then to the left side of the engine compartment into the charcoal canister.
Some Early 71's may have a vented tank cap , no vent line - if I remember right (it's been a while) and no canister.
Some Early 71's may have a vented tank cap , no vent line - if I remember right (it's been a while) and no canister.
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Team Owner
Joined: Jan 2006
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From: Crossville TN
If the car was built with a vapor recovery canister, it did not get a fuel tank vent. The charcoal canister IS the fuel system vent. The '71 had the vapor recovery system and a NON-vented fuel cap.
Melting Slicks
Joined: Sep 2006
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From: Wichita Kansas
So to get back to your question, and staying on the passenger side of the car, you have two lines between the front and that back? One that sends fuel to the carb, and one that goes back to the fuel tank?