Okay, I think I might have found a problem that's casuing the hesitation!
Just need to find out what the part is called so I can order one!
I'll try to explain:
There's two pipes that come out of the cam cover, 1 think one that goes into the charge carrier (?) one that feeds around the back of the engine, and goes into the inlet manifold (?) Well on this pipe is a 1 way valve, a white looking thing. This is the part I'm after!
Has it got a special name, or shall I just say a white 1 way valve looking thing??