Breather Cap on valve cover?
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: Breather Cap on valve cover?
Originally Posted by flusz28
so the check valve goes inside the hose on the driverside of the intake?
Last edited by 1racerdude; Jul 22, 2006 at 09:08 PM.
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: Breather Cap on valve cover?
The check is installed to prevent boost from entering the vacuum hose.
It will be a one way check so blow or suck on it to find out which way.
OK get ya mind out of the gutter.
It will be a one way check so blow or suck on it to find out which way.
OK get ya mind out of the gutter.
Registered User
Joined: Aug 2005
Posts: 862
From: Columbus, IN
Re: Breather Cap on valve cover?
I know this may sound overly simplistic, but for the guys who are experiencing the problem of having oil sucked into their intakes, would it be possible to install an inline check valve into the hose that runs from the throttle body to the valve cover? (So that air may flow FROM the throttle body to the valve cover, but nothing may flow BACK in the opposite direction?)
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
Re: Breather Cap on valve cover?
The system was intentionally designed by GM for the vent line to reverse flow in cases where the crankcase pressure exceded the capacity of the PCV system. If you block the vent line with a check valve, you run the risk of the crankcase pressure building up and blowing the dipstick out of the tube, or causing oil leaks at seals.
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