Pressure building in tank

Maybe it is sucking air when I open it? But should it even do that? This is that canister I was talking about. None of the ports are hooked up except for the one that says fuel tank. And the retainer is on there, no idea how to get it off.

From left to right it says, Carb, PCV, tank, then carb bowl.

I will try the header wrap.

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I own an older A body so mine car doesn't have a canister, someone else will probably be able to help with that issue. I would try the header wrap also, silicone tubing works real nice but if it ever catches on fire it's hard to put it out (don't ask how I know). Remember they sell the header wrap in wide and narrow strips, the narrow would be easier to apply.

PS - Don't forget to check the fuel line routing all the way back. If the line comes close to anything that gets "hot" you'll continue to have the same problem!!

treblig