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PCV location/symptoms blue smoke help!!

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Cesarlcase

10+ Year Contributor
261
5
Dec 29, 2009
lynbrook, New York
Yesterday i gave my car some heavy throttle and blue smoke popped out the exhaust than the engine was looking like it was on fire...Pulled over only to find the engine bay flooded in oil!!! :banghead: I looked and saw the oil dip stick sticking out. I read that a pcv could cause this. I know the other grim things this could be a symptom of but i want to see if i change this if this will cure it,if not imma just toss this car. But umm any help on the location of this part will be a good thing. This car!!! :banghead:
 
the way to test them is to take it off and shake it. . if it rattles its good. but the spring inside could also be broken too sooo. . . they are like 2-3 bucks just buy one if you have never replaced it. . they last about 30-40K.
 
I had exact same issue with a brand new PCV valve from Autozone and a brand new dipstick from a dealer. Issue was with a pcv valve as it let air flow both ways. You can test it by blowing air through both ends of the valve, it should only allow air to flow from valve cover side to intake manifold side. Funny thing was that all new pcv valves at Autozone let the air flow both ways. Ended up buying a pcv valve from a dealer and sure enough it only let ait flow one way in correct direction.
Blue smoke most likely was caused by oil pushed through turbo seals.
 
The PCV valve is located on the top left (facing the engine) of the valve cover. It looks like this:
105463d1264012013-painted-valve-covers-merged-11-8-p1200020.jpg


PCV valves are know to leak, even brand new ones. Blowing the dipstick out is very common. The problem is usually caused by boost bypassing the PCV valve and building up pressure in the crankcase. To much pressure and something has to give, usually the dipstick. If you add a check valve, like this one that hold 150 psi, into the line after your PCV valve it will usually solve the problem. It should look like this:
109823d1274211295-removing-part-engine-wire-harness-p5180254.jpg


Hope this helps!
 
Definitely did help me find and remove the part...but unfortunately didn't cure the symptoms.
 
another solution is to just remove the PCV valve and run a catch can. also to help the dipstick problem temporarely you can use a ziptie to hold it down. More than likely the rubber gasket that holds the stick in the tube is worn out. Or you can purchase a sprung dipstick like the one STM sells.

Goodluck with fixing your problem and keep us updated.
 
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