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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Whats this tube coming out of the valve cover..to the intake?

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Old Nov 11, 2007 | 06:40 PM
  #21  
Tacoma750's Avatar
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excuse my ignorance..but what kind of hose fitting? I see like 300 kinds online
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Old Nov 11, 2007 | 06:58 PM
  #22  
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From: Grass Valley, CA
go to the local hard ware store. It will be a brass fitting with multi level looking things. One end should be about an inch of that and the other should be fairly small with a small nut to pinch the tube between the nut and fititng body.
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Old Nov 11, 2007 | 07:00 PM
  #23  
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O ok i know what your talking about.
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Old Nov 11, 2007 | 10:03 PM
  #24  
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This is from a buddy of mine
"pcv isnt needed. its for emissions. its supposed to go into the intake to cut down on pollution and what not. you can just take the hose off or get valve covers with breathers and do away with it. dont plug it off, the engin has to be able to vent out gasses made inside by movement of parts, heating up, cooling down and what not"
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Old Nov 11, 2007 | 10:08 PM
  #25  
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BTW...the hose that goes into the valve cover isnt attatch to anything. It just slides into the valve cover.
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Old Nov 11, 2007 | 10:45 PM
  #26  
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u shouldnt leave it disconnected. the gases in the case are byproducts from combustion in the cylinders that force their way past the piston rings and will form damaging sludge in your engine
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Old Nov 12, 2007 | 04:01 AM
  #27  
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What engine is this? You want the hose attachment point to seal up or you'll get unmetered air into the engine. I'd try and get the attachment point about the same as it was stock...ie... if it was before the throttle body before keep it there, if it was after the TB keep it there. My 5VZFE has one before (drivers side vent) and one after the TB (Passinger side vent). And no its not just for emissions, did you read that link I gave you? Here is it again in case you missed it:
http://www.yotarepair.com/Sludge_Zone.html

Heres a quote from it:
The actual cause of the problem is an inability of the engine's crankcase ventilation system (PCV) to move the normal gases from the engine. When these gases stay longer in an hot engine it allows deposits to form on the metal parts of the engine. When enough deposits are present "Sludge" is formed. In my opinion the reduced flow of the PCV is related to the vehicle emissions. This presents a problem since to correct it may require Toyota to recertify the engines, come up with a solution acceptable to the EPA and then they still have to repair or assist in repairing the affected engines. The costs would be staggering but ignoring the problem, in so many of their best selling vehicles, may be worse in the long run. In the various articles I've listed below, if you want, you will learn more about the cause an effect.
I'm thinking (could be wrong of course) the reason my V6 has one PCV hose in front of the TB and one after the TB is to setup a pressure gradient between the 2 vent hoses and increase flow. But I'm open to other ideas on why the Toyota engineers did that. I'm a believer in keeping things stock if you don't understand why the engineers did what they did.
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Old Nov 12, 2007 | 06:18 AM
  #28  
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As i mentioned...look in my signature. Its a buick 3.8L carbd..not fuel injected. The hose was run from the valve cover and into the aircleaner VIA a hole in the bottom of the aircleaner. It was like that when I got the truck from the PO.
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Old Nov 12, 2007 | 08:13 AM
  #29  
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From: Grass Valley, CA
My dads jeep has the same engine and the same hose and it needs to be connected, same was what were saying.
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Old Nov 12, 2007 | 08:50 AM
  #30  
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From: cedar springs mi/lima oh
Originally Posted by Tacoma750
BTW...the hose that goes into the valve cover isnt attatch to anything. It just slides into the valve cover.
its wrong then, it should be hooked to a fitting that is a check valve.
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Old Nov 12, 2007 | 09:16 AM
  #31  
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From: Oklahoma State
Originally Posted by Tacoma750
As i mentioned...look in my signature. Its a buick 3.8L carbd..not fuel injected. The hose was run from the valve cover and into the aircleaner VIA a hole in the bottom of the aircleaner. It was like that when I got the truck from the PO.
Oh sorry, I had too much captain in my beer last night and totally missed that little detail. Note to self: stop typing after

After looking at your pic closer, I'd say look at drilling (and taping if its thick enough) that shiny air filter bracket thingy and screw a hose barb fitting into it. If you use a nut to hold the fitting in place be very carefull it doesn't come off and get sucked into the engine (very bad). Since it uses a carb you don't have to worry about unmetered air getting in, but you still should worry about unfiltered air getting past the air cleaner and use some sealer around the fitting threads.

Was there not a vent for the other valve cover on the other side?
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Old Nov 12, 2007 | 12:23 PM
  #32  
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I dnot think the other valve cover has a vent..i'll snap some pictures real quik
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Old Nov 12, 2007 | 12:28 PM
  #33  
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Here is a shot of the passenger valve cover....no PCV valve or vent.
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OO and i lied..there is a valve on the driverside
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Old Nov 12, 2007 | 01:21 PM
  #34  
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From: Sweet Home, OR
On my 22r, there are two places on the intake. One is the PCV and runs into the intake, leave that one if possible. The other one runs from the VC to the top of the air filter. That one you can just put a small cartridge filter on and call it good.

The difference is the PCV will have a valve that sits in a rubber grommet on the VC, the other one will just connect with no valve.
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Old Nov 12, 2007 | 02:11 PM
  #35  
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You see all that oil on my valve covers? What the heck is that from? I just cleaned them maybe two weeks ago
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