Pcv Valve???

BowTie Eater 5 Liter · 12-06-2001, 10:50 PM

where do i find it? what does it do? and should i replace(or clean) it???

thanks

7000rpmisheaven · 12-07-2001, 12:29 PM

I have the same questions. What does it do?

fiveohpatrol · 12-07-2001, 01:15 PM

It's basically a vent to let out the air pressure in the crankcase.

It is on the very back in the center of the lower intake manifold (kinda hard to reach). It has a fairly large vacuum line coming off of it and that leads to the drivers side of the upper intake.

Yes you should replace it. It's an important piece of your normal tuneup. Don't get a autozone or other parts store PCV valve because they dont fit right and sometimes can cause a little oil to come out. Get one from a local ford dealer's parts dept. They're not expensive. But they can be hard to find/reach if you've never seen exactly where its at before.

Hope this helps

fiveohpatrol · 12-07-2001, 01:27 PM

this probably wont help much, but what the hell

joe4speed · 12-07-2001, 04:54 PM

Good picture, fiveoh!
It's a ***** to find, but once you get it, you'll always know! make sure you cjange out the screen underneath it too, you can pull it out with a pick.

PCV= Positive Crankcase Ventilation

89Saleen215 · 12-07-2001, 07:46 PM

Mr. Probst in his EFI book suggests changing it out for a higher flow one - EV-140. It also is supposed to help give better emission numbers. I've used one for the last number of years with no problems passing smog with flying colors.

Just a thought.

Saleen 89-215

12-06-2001, 10:50 PM	#1
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	Pcv Valve??? where do i find it? what does it do? and should i replace(or clean) it??? thanks __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~

12-07-2001, 12:29 PM	#2
7000rpmisheaven Registered Member Join Date: Nov 2001 Location: germantown MD Posts: 283	I have the same questions. What does it do? __________________ 85 GT 4bbl roller cam 2 ch. Flowmasters, O/R H-pipe Performer intake and carb milodon water pump, FMS 9mm wires, aluminum driveshaft, king cobra clutch

12-07-2001, 01:15 PM	#3
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	It's basically a vent to let out the air pressure in the crankcase. It is on the very back in the center of the lower intake manifold (kinda hard to reach). It has a fairly large vacuum line coming off of it and that leads to the drivers side of the upper intake. Yes you should replace it. It's an important piece of your normal tuneup. Don't get a autozone or other parts store PCV valve because they dont fit right and sometimes can cause a little oil to come out. Get one from a local ford dealer's parts dept. They're not expensive. But they can be hard to find/reach if you've never seen exactly where its at before. Hope this helps __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

12-07-2001, 01:27 PM	#4
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	this probably wont help much, but what the hell __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

12-07-2001, 04:54 PM	#5
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	Good picture, fiveoh! It's a *** to find, but once you get it, you'll always know! make sure you cjange out the screen underneath it too, you can pull it out with a pick. PCV= Positive Crankcase Ventilation __________________ Joe!** 1988 GT, 13.58@101mph Check out my listing! Click here! Or my website:www.joe4speed.com

12-07-2001, 07:46 PM	#6
89Saleen215 Registered Member Join Date: Nov 1998 Posts: 14	Mr. Probst in his EFI book suggests changing it out for a higher flow one - EV-140. It also is supposed to help give better emission numbers. I've used one for the last number of years with no problems passing smog with flying colors. Just a thought. Saleen 89-215

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