Make sure the line that goes OUT of the CCV and 90-degree elbow goes IN to the bottom port of the AOS, while the other line goes OUT of the top of the Air-Oil Separator and IN to the “T”-fitting at the intake manifold
Now that the Bob’s Auto Sports Air-Oil Separator is successfully installed in our PCV system, we turned our attention to the more obvious problem: the valve cover vent.
It’s not uncommon to see oil seeping from the valve cover vent tube. While not as pressurized as the PCV/CCV, valve covers can still see positive pressure and undersized drain-back tubes can cause excess oil in the valve covers to slosh around and work its way to the airbox.
Looking inside the airbox, there is a little yellow sponge that somewhat acts as a baffle and filter for the valve cover vent. Prior to cleaning, this sponge was saturated in oil with a distinct oil trace flowing into the driver’s intake tube. The corresponding throttle body also had a small amount of oil puddled at the base of the blade. This was an obvious trace of power-robbing, knock-inducing oil entering our combustion chamber. At this time we feel this was more of a priority over catching oil in the PCV/CCV.
To install our catch can, first we need to remove the plastic vent tube which easily pulls right out.
All we need to remove is the straight plastic tube. But here we can clearly see how the line vents both valve covers.
Next, we inserted the 90-Degree 5/8” Brass Barbed Hose Fitting into the “T”-connection and reused the factory constant tension clamp. Then we ran a long 5/8” Inner-Diameter hose down to the brake booster area.
