I usually test PCV valves by shaking them. If they do not rattle like a
ball in a spray paint can they are us/stuck and need cleaning. I usually
wash them in solvent (petrol) and try again. If they still do not rattle
.. in the bin and get a new one.
Usually a good wash/soak with solvent is sufficient to get all the gunk
out.
Once dry ... a good puff of air should check if they still shut off in
the one direction.
Mebbe the later types are computer controlled .. dunno ... I am a shade
tree mechanic and steer clear of hi tech gizmos <g>.
Cheers
Dave
daveread@dove.net.au <RIP 8Nov01>
South Australia
----- Original Message -----
From: "bown" <bown@concentric.net>
To: "David Read" <daveread@dove.net.au>; <buick-rover-v8@autox.team.net>
Sent: Monday, October 29, 2001 3:23 PM
Subject: Re: Help With PCV setup for Rover V8
> I have always thought of the PCV as sort of a variable valve.
>
> ----- Original Message -----
> From: "David Read" <daveread@dove.net.au>
> To: <buick-rover-v8@autox.team.net>
> Sent: Sunday, October 28, 2001 5:30 PM
> Subject: Re: Help With PCV setup for Rover V8
>
>
> > I could be wrong here, but ....
> > I thought the purpose of the PCV valve was to prevent crancase fumes
> > polluting the atmosphere by allowing diluting air in but not out
except
> > by means of an alternative path into the engine's cylinders.
> > I agree that the outlet via carby/inlet manifold must be controlled,
but
> > mixture adjustments are made with this system in operation and
should
> > compensate.
> >
> > PCV valves are a simple ball/needle and seat type one way valve ....
> > No rocket science used here <g>.
> >
> > Cheers
> > Dave
> > daveread@dove.net.au <RIP 8Nov01>
> > South Australia
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