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Anyone know anything about the recirc valves?

What a bugger those recircs are to get at and get off!

 

does anyone know whether if you disconnect the vacum you can just leave them on. Not sure whether it will block the holes or whether it will leave them open?

 

Any ideas?

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    Not a good idea to leave them on.

     

    under boost the valves need positive (boost) pressure to keep the valves closed completely or they will start to leak air/boost...this is often the case with older valves with worn out springs.

    The smaller vacuum hoses on top on top of the valves provides the pressure to keep the valves closed under boost and open under high vacuum

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