Thread: How do you actually check a PCV valve?
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Old 07-11-2010, 02:09 PM
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wrogers55 wrogers55 is offline
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Join Date: Sep 2009
Location: Hideaway, Texas, TX
Cobra Make, Engine: Backdraft #318, 418 CI, 532 RWHP, Mass Flow Injected, TKO600-Road Race, BMW M3 Suspension, Race Springs (Wouldn't do it again, rough on the street).
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Default How do you actually check a PCV valve?
I have a 418 SBF with a PCV setup on the passenger bank, piped into vacuum port of a MassFlow FI. Driver side has a typical small air filter canister. This is a big HP motor that is street driven only.

The PCV valve plugs into the valve cover and the hose runs off of it at a 90. Two things:

1. The valve seems to have no restriction, blowing through it either way. Problem or no?

2. Big oil consumption problem, maybe 1-2 quarts in 500 miles, but no sign of where it's going for that kind of use.

I'm wondering if a lot of oil vapor or droplets are being sucked out of the valve cover area into the intake. That little PCV valve sits right over a rocker on the Ford Racing cast covers, and I mean it's close!

Any ideas?
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