Mine was not sealed when I got my ride. The boot from it was not on
correctly either.
Seated the boot properly, cleaned the wiper track with isopropyl and sealed
the lid properly.
I figured there is a small passageway for air to be sucked in thru the
lid/body joint if it
is not sealed. That leak leak would be after the vane that does the actual
air volume measurement.
Careful prying the lid up.

Later,
Keith

81 Westy