318 vacuum advance

Mattax said
From what you describe the vac port connection seems correct. We can check that.

Mattyb said
my dist has a black and blue wire and a black and orange wire

I don't have a direct answer on hand.
Here's what I do have.
From the same instructions.
MSD connector. Violet +, Green -
Also that on Chrysler distributors orange or White +, black -.

May have to determine the polarity of your distributor wires by looking at the connector.
The longer side of the connector is negative.

So whatever color is on the longer side of the connector, connect it to the MSD green wire.
and whatever color is on the shortere side of the connector, connect it to the MSD violet wire.