After replacing my manifold-front exhaust pipe gasket on my 88 sedan (automatic), I noticed that there is a port of some sort on the engine bell housing on that side of the engine, about 2/3 of the way up the side of the engine, to the rear of the manifold. It looks like a connection for a 1/2" hose, or similar. It's not connected to anything, and I'm just curious what it is and (not being the original owner) if I should be concerned that it's not hooked up to anything. Is this a vent hole for a manual clutch?
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