can anyone tell me what the rubber like seal does inside the valve. when i took the valve out there was a rubber seal slightly stuck to the valve itself, which fell off in my hands. is this just suppose to sit in between the valve and diaphram in the manifold or should it be deffinately fixed to one or the other? cheers richard.

 

Yes it just sits between with the angle side out cheers

 

hi do you mean angle side facing the the iscv or the manifold? and if this was the other way around would this cause dropping idle cheers richard.

 

It acts as a one way valve, Closed by Boost Pressure & open on idle Etc.

Dean