wont go into gear at high rpm

[Disco]

please help I changed the clutch mastercylinder and now the car wont go into gear at high rpm. iT also lurches with the clutch on the floor and giving it gas.

 

[boostin4fun]

please help I changed the clutch mastercylinder and now the car wont go into gear at high rpm. iT also lurches with the clutch on the floor and giving it gas.

It is possible that the slave cylinder is bad. That is the hydralic part that is on the transmission it is resposible for releasing the clutch. When that goes bad it wont release the clutch and the car wont go into gear like it is suppose to. I would replace it and make sure the hydralic system has been bled properly and fully. Good luck.