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pcv problem?

M modokMember
Hello, need some advice. I was driving my pantera home yesterday and I started hearing a strnge whistleing sound.when I stopped at a streetlight I found my idle had jumped up to about 2000 rpm from the normal 1000. I made it home but the car was running kinda funny.Suspecting a vacume leak I retightened the intake and carburater and both were okay.what I did find was that if I plugged the line from the intake to the valve cover idle returned to normal. On my car I have the detomaso valve covers with the billet isis logo breathers.On the passenger side a line runs directly from the intake to the valve cover breather. This breather seems to be unvalved. On the driver side a line goes from the air cleaner baseplate to valve cover breather. This breather appears to be valved. Anybody else running this type of setup? Could the pcv valve have died? Who makes these breathers? Thanks for your time.
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marlinjackmarlinjackThe Machinist #5723 AMARGOSA MACHINE 'Running on Empty- Middle of Nowhere'
...I Didn't say anything about the V. Covers being reversed!!! What I said was: The hose connected to the Manifold Vacuum Source; MUST be valved at the V. Cover! Usually the right one. The Other connection, at the Air Cleaner Baseplate, provides filtered air 'Draw', to be sucked out throught the Valve. Hense 'Positive Crankase Ventilation'! Get it?...
M modokMember
I unscrewed the breather containing the valve on the drivers side v.cover,checked to make sure it was not stuck(it rattled nicely),and swapped it to the passenger side v.cover that is connected to manifold vacuum source. This seems to have solved the problem and it even seems to idle slightly better than before,I'll test drive it this week and make sure this solved it for good. What bugs me is why this happened now,I've put a couple thousand miles on the car with the pcv apparently in the wrong place and it always ran fine with no vacuum leaks.BTW it has a hydraulic roller cam of unknown specs and a really lumpy idle.
bosswrenchbosswrenchMember
Occasionally, a PCV can stick open, and the simple act of removing it causes the little valve to break free and begin working again. Stuff like this happens as part of a plot to keep us broke and alert.... The side of the engine shouldn't matter as long as its hooked up properly. I've found a few PCVs UPSIDE-DOWN in their valve cover grommets. They can be connected this way but they certainly won't work correctly! Expect maximum smoke in turns facing the side where an upside-down PCV is mounted.
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