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Reply to "PCV Valve"

My "guess" is no.  The PCV valve "sucks" stuff out of the crank case - as Doug described.

To have enough pressure in there to pop the dipstick, while (also) blowing through the PCV valve would seem to me to be a pretty significant pressurization.

Have you run the engine with the PCV Valve removed (or breather, or the oil fill cap) and put your hand over the hole, and checked to see if you feel a lot of pressure blowing out of the case when the engine is running?

If you have enough "blowby" (it would be from compustion pressure - rings) to pop the dipstick out of it’s seat, you should see other effects, like oil inside the air cleaner (if you have a breather going there).  I would also think you would see oil vapor coming out of the dipstick tube once it is popped off.

Certainly your PCV valve ought to show symptoms of oily flow back into the manifold.

Let us know.

Rocky

Last edited by rocky
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