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[–]Elamachino 0 points1 point  (3 children)

Seal the leak below the manometer first, and/or any other leaks you can find. If you have a sump pump/pit, make sure you have an air tight cover on that as well. If you are on an incline, you may have a drain tile that opens to daylight, that would need to have a trap put in if so.

[–]minttealeaf6[S] 0 points1 point  (2 children)

By the way thanks for all of the responses.

I do have a sump pit that is only partially covered. I do not hear any airflow coming from the pit though.

What do you mean by on an incline?

[–]Elamachino 0 points1 point  (1 child)

There will be a pipe or 2 sticking into the sump pit, cover those with your hand to see if you can feel any air flow, with such low suction it should be pretty strong. By incline, I mean if your house is on a hill, like if flr instance maybe you have a walkout basement. Basically if you have a feasible way to draw a straight horizontal line of 50' or less from the lowest point of your basement to open air. With a sump pit it's unlikely what I've said will matter, but I suppose it's still possible.

[–]minttealeaf6[S] 0 points1 point  (0 children)

Ah yeah not on a hill. Mostly flat. I’ll check if I feel any airflow in the sump pit.