fuel cell question
I have an aluminum cell in the trunk. I swapped from VP to Renegade at a race due to availability. At Reynolds I swapped back to VP so I ran the pump with the line off at the carb till it ran out of fuel. When I tried to remove the cell cap it was in a vacuum, like the cap was stuck and sucked air in when I took it off. Is this normal. No return line system and does have a vent tube outside of trunk. I have never done that before and wasn't sure that was normal. Seems like if it was a plastic cell that it would try to suck the cell flat.
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