Wouldn't it be better to have a valve cover breather rather than having a tube going from the valve cover back to the intake??? - Fuelly Forums

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Old 02-17-2006, 10:55 AM   #1
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better for the engine to have a valve cover breather and a breather on the intake??? Also would this create a vacuum leak?...

Would it be better for the engine to have a valve cover breather and a breather on the intake???

Also would this create a vacuum leak?
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Old 02-17-2006, 11:00 AM   #2
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I'm thinking it will create

I'm thinking it will create a vacuum leak. It's also bad to remove this because you won't be able to expell the oil particles in the crankcase, which will hurt your engine in the long run.

If you really want to prevent the oil from re-entering the engine through the intake, install a catch-can inline with the crankcase ventilation and the PCV line.
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Old 02-17-2006, 11:05 AM   #3
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Valve cover breathers

Breathers were common 40 years ago, but they were phased out to reduce crankcase emissions which, as I remember, were very significant.....about 30% of total uncontrolled emissions. Adding a breather and removing the PCV valve would be VERY bad for the environment.

The simple breathers were replaced with PCV valves. The PCV valve keeps the crankcase relatively free of water vapor, and the oil last slonger and there is less engine corrosion.

I vote to leave the PCV in.
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Old 02-17-2006, 11:09 AM   #4
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Quote:I vote to leave the

Quote:
I vote to leave the PCV in.
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Old 02-17-2006, 11:45 AM   #5
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Re: Valve cover breathers

Quote:
Originally Posted by Sludgy
Breathers were common 40 years ago, but they were phased out to reduce crankcase emissions which, as I remember, were very significant.....about 30% of total uncontrolled emissions. Adding a breather and removing the PCV valve would be VERY bad for the environment.

The simple breathers were replaced with PCV valves. The PCV valve keeps the crankcase relatively free of water vapor, and the oil last slonger and there is less engine corrosion.

I vote to leave the PCV in.
What the hell are you talking about??? Nobody mentioned anything about a PVC. I said valve cover. You know the hose that goes from the valve cover to the intake. That one.
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Old 02-17-2006, 11:51 AM   #6
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Re: Valve cover breathers

Quote:
Originally Posted by Compaq888
What the hell are you talking about??? Nobody mentioned anything about a PVC. I said valve cover. You know the hose that goes from the valve cover to the intake. That one.
Why such hostility? I don't know how you're going to get people to help you if you're always rude to them.
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Old 02-17-2006, 11:53 AM   #7
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If I remember correctly the

If I remember correctly the hose that goes from the valve cover to the intake is the pcv line.
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Old 02-17-2006, 11:55 AM   #8
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Re: If I remember correctly the

Quote:
Originally Posted by SVOboy
If I remember correctly the hose that goes from the valve cover to the intake is the pcv line.
That would be incorrect, but it's a very common mistake. No need for anyone to be all hostile over a common mistake.
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Old 02-17-2006, 12:03 PM   #9
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The pcv line has the

The pcv line has the charcoal canister on it already, right? Squarey looking black thing on the b2?
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Old 02-17-2006, 12:09 PM   #10
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Re: If I remember correctly the

Quote:
Originally Posted by Matt Timion
Quote:
Originally Posted by SVOboy
If I remember correctly the hose that goes from the valve cover to the intake is the pcv line.
That would be incorrect, but it's a very common mistake. No need for anyone to be all hostile over a common mistake.
It seems to me that I've heard that the hose being discussed is used for some type of a balancing effect for the PCV system. Is this correct?
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