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Behind the back seat of my 72 convt. there is a strange item. It is a oblong housing hollow inside capped on top bolted to the sub floor approx, 12" high 8"wide 1.5" deep.
It goes to nothing that I know of. Any Ideas????
 

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Rick, Go under the car and see if it is connected to the gas tank. It is, I believe a fuel vapor separator, part of the emissions system. I had one on my 72 Lemans and thats what the owners manual said it was and it should be connected to the gas tank.
 
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Okay it's actually only 5"wide x 10"ht X 1.25"deep and I double checked no lines or wires of any type are connected to it. What or how did it work with the vapor system in your pontiac??
 

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Well Rick, In ever looked at it myself, I took the owmers manual for its word and since I don't have it anymore I'll have to look under my brother-in-law's car to see if it has that and if it is hooked to anything. He has a 72 Chevelle.
 

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I have the same box in the rear of my 71SS. Until now i never realy paid any attention to it.

However, looking over the assembly manual it is a Separator Asm (assembly?). Four hoses attach to this device, two from the outer pipe on the gas tank, one from the center, and a vapor pipe that runs to the forward section of the car, exactly where i am not sure.



[This message has been edited by Radd (edited 04-28-99).]
 

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Radd, Look at my first post. I explained what it is in that post. The line to the front goes to a charcoal cannister mounted on the core support on the left,next to the radiator.

[This message has been edited by chev64 (edited 04-28-99).]
 

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Can the separator be eliminated by pluging the 3 lines in the gas tank and using only the fuel and return lines or does the tank need to vent. My car no longer has the canister.
 

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