I have a 1994 Mazda B4000. In the past week the truck has gotten where it will not go from a stop, it simply revs the engine for around 30 seconds. The truck will then jerk and go. It will do this one or two times. Once the truck is warmed up a bit it will run fine. It won't do this unless the truck has been sitting for several hours.
I just checked the transmission fluid and it was at the right level. Not sure what else to check.