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Old 22nd May 2019, 08:17   #1
planenut
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Default Crankcase Breather Hose - direction

Now this may seem a stupid question to some, so, sorry.

On my 1.8T the breather hose from the crankcase to the inlet manifold has a small valve in it. I do realize that the idea of the breather is to vent the crankcase relieving the pressure, but as there is not a valve on my 1.8 NA, is it absolutely necessary?

Investigating the possible further failure of the "head gasket" and having explained elsewhere, the crankcase cover had a build up of mayo, and I wondered, if it had been vented properly would these particles have been cycled round and burnt off?
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