My '70's fuel tank made a "woosh" sound as the gas cap was removed to refuel. Is this normal?
This was the first refuel since I replaced a locking, vented cap (which was on the car when purchased) with a STANT 10852 sealed cap. The tank never made a sound with the old vented cap. The Stant was recommended by Joe Lucia on the forum as a duplicate of the original (and visually, it looks like an original '70 cap, as per the JG).
Does the "woosh" mean the gas tank's vent line is blocked? This car does not have NA9 (evaporative canister system).

This was the first refuel since I replaced a locking, vented cap (which was on the car when purchased) with a STANT 10852 sealed cap. The tank never made a sound with the old vented cap. The Stant was recommended by Joe Lucia on the forum as a duplicate of the original (and visually, it looks like an original '70 cap, as per the JG).
Does the "woosh" mean the gas tank's vent line is blocked? This car does not have NA9 (evaporative canister system).
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