[dadooishome]

It has been too cold to work on this the past month or two.
I am now fairly certain the intake manifold has a bad gasket somewhere. I have literally checked everything else going into the manifold. To achieve an extra 1200-2200 rpm it takes about a 1/2" diameter air leak. So this weekend I am going to pull off the manifold. It is a large one-piece plastic unit and very difficult to access, probably 2-3 hours each way . I will post again when finished.