I just woke up my car from a long winters nap. Car fired right up and I let it warm up before I took her for a spin. I noticed before I put the car away for the winter that I was starting to experience some bucking when I realease the clutch in first gear. Well the bucking is still there, would this be a sign of a bad pressure plate or what would cause this problem. Will be pulling the motor soon to check on a few things since this motor is a new rebuild.

Bad seals letting oil get on the flywheel....clutch chatter. Or it could be a broken front motor mount.

Check for broken front motor mounts. Applying some pressure with a floor jack under the motor can tell you. If the motor moves a bunch relative to the bar, then your front mounts are gone.