drivetrain related problem!!!
 

Okay my 325 after sitting down for nearly 2 years will be coming out soon. Heres the problem the car goes into gear perfectly when the car is not running..However when the car is running and i sink the clutch the car will not go into gear.:wtf . If I press the shifter against the gear it will try to move. Now If i leave the car in gear and try to start it, it will give a back and forth jerk.. My guess is maybe the cluth slave cylinder and proper bleeding, The clutch was good before I put it down and the gearbox must be good if its going into gear without it running.. Any thoughts guys??:

sounds like condensation has gotten into the clutch slave -drain, flush and refill - look for leaks also