Hi all a real newbie to all this. I have recently bought a free lander 53 plate freelancer 2.0 BMW deisel td4. I have noticed a miss on the engine more when doing around 2000 rpm. Someone dithered that its the mass air filter sensor so I bought a new one this made the acceleration really dead so reverted back to old one. Now I have taken the egr off and cleaned inside not sure if you are supposed to be able to move the valve inside by hand this seems to be stuck. Put back on engine seems to have improved but not 100% any ideas will be well appriciated thanks Wayne