Clutch problems! always the same lol.....most often you will find that it is this part causing the problem, it is what the clutch slides on and should be replaced everytime you replace the clutch it wears out and gets grooves in it causing the clutch to stick, slur, not engage smoothly, clunky operation as the hydraulics sense resistence and are fooled into thinking clutch is fully engaged when its not.
BMW recommends when you replace the clutch to not lubricate this part, however from past experience I have found using copper grease is very effective in keeping this part functioning correctly.
If your car has been sat for a long time over winter then it could have become corroded from moisture. This causes the calibration to be incorrect in the SMG ecu as the clutch no longer moves like it used to before you parked it up!
Only way to solve this is gearbox out inspect and replace part or lubricate depending on condition or you could try driving it with some hard full throttle shifts in order to smooth out some of the sticky sections along the shaft.
Part I am talking about is number 1 in the diagram.
BMW recommends when you replace the clutch to not lubricate this part, however from past experience I have found using copper grease is very effective in keeping this part functioning correctly.
If your car has been sat for a long time over winter then it could have become corroded from moisture. This causes the calibration to be incorrect in the SMG ecu as the clutch no longer moves like it used to before you parked it up!
Only way to solve this is gearbox out inspect and replace part or lubricate depending on condition or you could try driving it with some hard full throttle shifts in order to smooth out some of the sticky sections along the shaft.
Part I am talking about is number 1 in the diagram.
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