Question on PCV Setup
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Joined: Jul 2000
Posts: 53,972
Likes: 6,197
From: About 1100 miles from where I call home.
Resurrecting a very old thread, but I have a question.
I read enough that I understand getting the airflow through the crankcase. Pull from one valve cover through the engine and from the other vented (maybe filtered) valve cover.
What about high HP motors that don't make much vacuum? I have to rev the motor a little on mine to build enough vacuum to move the lights. I don't think there is a leak in the canister, but maybe there is. Typically one light moves and then after a little rev, the other light moves. If I'm not really putting much pull on the PCV valve most of the time, is it really pulling air properly? Does the PCV system need much vacuum to work? If it doesn't I could see the PCV valve starving the vacuum down most of the time and even an engine without much vacuum would function OK. But I don't know how much vacuum it really needs.
I read enough that I understand getting the airflow through the crankcase. Pull from one valve cover through the engine and from the other vented (maybe filtered) valve cover.
What about high HP motors that don't make much vacuum? I have to rev the motor a little on mine to build enough vacuum to move the lights. I don't think there is a leak in the canister, but maybe there is. Typically one light moves and then after a little rev, the other light moves. If I'm not really putting much pull on the PCV valve most of the time, is it really pulling air properly? Does the PCV system need much vacuum to work? If it doesn't I could see the PCV valve starving the vacuum down most of the time and even an engine without much vacuum would function OK. But I don't know how much vacuum it really needs.
