I've tested the valve by sucking and blowing in the bottom of the valve that
goes to the intake manifold. It doesn't allow gas to go back into the valve
cover, but when I suck it allow air into the manifold, even when I push down
on the disk and post gadget inside the valve that
sits directly and vertically over the check valve. Shouldn't doing this
prevent air from going into the intake? Is there a way to fix this? It
looks like the valve part is pressed into the housing.
Are there any modern PCV valves that are not just a one way valve, but also
a regulator?
Thanks
Jeff Porter
67 - TR4A with a rough idle :-{
Date: Sun, 18 Oct 2009 18:13:54 EDT
From: Dave1massey@cs.com
Subject: Re: [TR] TR4A Crankcase Breather Valve
To: triumphs@autox.team.net
Message-ID: <cb1.4c26ffb8.380ced22@cs.com>
Content-Type: text/plain; charset="us-ascii"
In a message dated 10/18/2009 4:46:41 PM Central Daylight Time,
piggerp@comcast.net writes:
> I've been having troubles with my front SU carburetor idling to fast.
> I've
> made sure there are no leaks and there is nothing hanging, but the
> carburetor reuses to go less then about 2000 RPM. I then plugged the hose
> from the intake manifold to the Crankcase Breather Valve and the RPM
> dropped
> sharply. I assume there is a lot of air getting through this system.
> How do I check the whole system to see if the breather valve is
> functioning?
> Can I get rid of it?
>
Make sure the valve is assembled correctly. I ran into this issue and the
pin on the plate with the diaghram was not centered and was not regulating
the air flow. Basicaly it was wide open. I put it back together correctly
(not all that trivial) and the car tuned up just like it should.
Dave
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