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Car Forum / Acura Cars / December 2004PCV Valve
Group; I was looking thru my maintenance records on my 89 Legend Coupe and see I ever did a PCV valve. My silver shop manual shows it under a valve cover, with a gasket and exit hose. I've replaced the hose when it broke a few years ago. Has anyone else forgotten to change this? What is the symptoms of an engine that needs this valve replaced? I pass all emissions. TNX Doug >Group; > [quoted text clipped - 9 lines] > >Doug You don't need to change it, although it doesn't hurt to do so. You can remove and clean it with carb cleaner. Natman; I have carb cleaner and will remove it and see if it needs a bath. TNX Doug >>Group; >> [quoted text clipped - 13 lines] > You don't need to change it, although it doesn't hurt to do so. You > can remove and clean it with carb cleaner. Pull it out and shake it, if it rattles it's fine. > Group; > [quoted text clipped - 9 lines] > > Doug MZ; OK. It is under a "lid" on the valve cover, and has a gasket that goes with it. With my past luck, I will need a new gasket just to test it. OY. Doug > Pull it out and shake it, if it rattles it's fine. >> Group; [quoted text clipped - 10 lines] >> >> Doug >MZ; > >OK. It is under a "lid" on the valve cover, and has a gasket that goes with >it. With my past luck, I will need a new gasket just to test it. OY. > >Doug The gasket is a rubber O-ring and is usually reusable. I've cleaned my PVC valve many times and never replaced it. If the PCV valve becomes stuck open, idle can become rough. If stuck closed (more common) crankcase pressure will build up from blow-by and force oil out of the engine, usually from the dipstick tube. That can be very dramatic - I lost nearly 3 quarts of oil between the time I saw the blue smoke behind me and the time I could take the next freeway exit when a breather hose plugged up in my Volvo. The engine was covered in oil. Mike > Group; > [quoted text clipped - 9 lines] > > Doug Michael; Whew. I am leaking oil from somewhere. Don't know exactly. Thanks for the reply; I will check it out. Doug > If the PCV valve becomes stuck open, idle can become rough. If stuck > closed (more common) crankcase pressure will build up from blow-by and [quoted text clipped - 18 lines] >> >> Doug > If the PCV valve becomes stuck open, idle can become rough. If stuck > closed (more common) crankcase pressure will build up from blow-by and > force oil out of the engine, usually from the dipstick tube. Before it goes out the dipstick tube it will try to fill up the intake with oil through the crankcase breather. Check the breather tube for the presence of oil, and check the intake in that vicinity for oily gunk. The dipstick leak will come after the breather gets blocked.  SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ On those engines, when the PCV valve goes bad, you'll usually start leaking oil out of the side cover gaskets. (which can damage the oxygen sensors). > Group; > [quoted text clipped - 9 lines] > > Doug > On those engines, when the PCV valve goes bad, you'll usually start > leaking oil out of the side cover gaskets. (which can damage the oxygen [quoted text clipped - 13 lines] >> >> Doug Isn't it nuts how a simple $3 part (or a few shots from a can of carb cleaner) can screw the engine so badly? >> On those engines, when the PCV valve goes bad, you'll usually start >> leaking oil out of the side cover gaskets. (which can damage the oxygen [quoted text clipped - 21 lines] > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.804 / Virus Database: 546 - Release Date: 11/30/2004 New PCV Valve came in to dealer. Now I need to get it and install it. Oil IS leaking from heads, and other un-seen spots. Doug If you have oil leaking from around the heads, pick up a new set of valve cover gaskets from the dealer while you are there. . >>> On those engines, when the PCV valve goes bad, you'll usually start >>> leaking oil out of the side cover gaskets. (which can damage the oxygen [quoted text clipped - 27 lines] > > Doug > If you have oil leaking from around the heads, pick up a new set of valve > cover gaskets from the dealer while you are there. . [quoted text clipped - 30 lines] >> >> Doug Got the PCV valve installed. Got the new rectangle gasket, valve, washer, and tube for $71.00. The old one was really stuffed with crap. Runs great. Now to see if it continues to leak. doug |
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