Rick, your comment about an air pocket in the fuel system made me think of my gas tank. I knew when I bought the car that the tank has a slight leak at the top where it seals together, nothing major, it never leaves fuel on the ground but I know it is there. Is the tank supposed to be under pressure and would air entering through this leak cause any problems? As well I talked to my mechanic friend and he thinks it is vacuum related because it only happens at 2400-2800 rpms, not on acceleration or decceleration. It was a short conversation and I plan on getting more info before the weekend when I will be attempting a fix, I will post my results. Thanks, Grant.