Cleaning Advice
 

Just replaced the oil/air seperator-pcv and because of the failure, the intake manifold and other internal parts are coated in oil.
My question is, is there a cleaner of some sort available that i can use to clean everything without dismantling?

Throttle body cleaner will do a good job of shifting it.

cool thxs dave

was a bit woried about it drying out the plastic and causing cracks

Throttle body cleaner is not quite as aggressive as Carburettor Cleaner and is made for fuel injection systems. I have used it on both my E36 and E21 without a problem.

I have been satisfied with the results of a product called Seafoam for cleaning jobs like this. I cannot really speak to how rubber/plastic friendly it is, but I have not noticed any problem. Seafoam softened some really cooked in crud so it would come out of the the EGR plumbing on my 300k mile Volvo. I also plan to use it to flush the PVC system on my wife's 330 soon.