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How to test PCV valve

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Old Aug 13, 2003 | 06:34 AM
  #1  
SergZ's Avatar
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From: Moscow, Russia
Default How to test PCV valve

Can you give me some instructions?

Thank You!

JDM Integra SiR-G (the same as GSR)
Moscow, Russia.
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Old Aug 13, 2003 | 08:48 AM
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Default Re: How to test PCV valve (SergZ)

Pinch the hose while the engine's running, you should hear it clicking.

I always thought that was kinda ghetto. If you wanna take the PCV valve out, you should hear it rattle when you shake it. There's a little ball on a spring inside the valve.

Clean it if it's full of oil. Blow through it very gently, it should flow pretty easy. Blow through it harder (from the engine towards the manifold) and it should close up so only a little air flows. It shouldn't close completely. Blow the other direction (towards the engine) and it should close completely.

Then after you've done all that, ask yourself if it's worth $8 to just get a new one anyway.

ps...
I just noticed you're from Moscow - welcome. Maybe those parts are harder to find over there... So maybe it's worth it to clean & re-use it.
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Old Aug 13, 2003 | 08:55 AM
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$4 over here.
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Old Aug 13, 2003 | 08:59 AM
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Default Re: How to test PCV valve (SergZ)

I just buy a new one, but after putting it in, I'd probably think about paying someone - 45 minutes is too long for such a simple part..
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Old Aug 13, 2003 | 09:15 AM
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Default Re: (Rayman)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rayman &raquo;</TD></TR><TR><TD CLASS="quote">$4 over here.</TD></TR></TABLE>Then $35 shipping to Moscow. Then you have to get 18 more before one of 'em actually gets there without being stolen...

LOL - I'm probably being too mean. But finding parts over there is probably harder than we think.
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Old Aug 13, 2003 | 02:11 PM
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Default Re: How to test PCV valve (Bill Hook)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bill Hook &raquo;</TD></TR><TR><TD CLASS="quote">I just buy a new one, but after putting it in, I'd probably think about paying someone - 45 minutes is too long for such a simple part..</TD></TR></TABLE>

seriously it took you 45 mins to change the pcv??????? wow that is an eternity.......how long does it take to change the oil in your car????
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Old Aug 13, 2003 | 02:40 PM
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Default Re: How to test PCV valve (cletus)

Shake the PCV valve. If you hear tapping then it is good.

If you hear nothing, then soak the PCV in some gas or other cleaner to dissolve the oil in it.

You are supposed to replace it often, but simply keeping it clean is fine.
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Old Aug 13, 2003 | 02:42 PM
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what is the pcv valve?

is it the black valve thingy that sits on top of the throttle body?

cause that **** costed me $130 bucks from the dealer.

my car gave a CEL code 92.

so i had to replace it.
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Old Aug 13, 2003 | 02:54 PM
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Default Re: (confucius)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by confucius &raquo;</TD></TR><TR><TD CLASS="quote">what is the pcv valve?

is it the black valve thingy that sits on top of the throttle body?</TD></TR></TABLE>
No. It looks like a little plastic elbow-shaped hose nipple. Accords have them right on the valve cover, with a hose to the intake manifold. Integras have them buried underneath the intake manifold, on top of the breather box which is attached to the back of the block.
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Old Aug 14, 2003 | 01:19 AM
  #10  
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From: Moscow, Russia
Default Re: How to test PCV valve (JimBlake)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">
ps...
I just noticed you're from Moscow - welcome. Maybe those parts are harder to find over there... So maybe it's worth it to clean & re-use it.</TD></TR></TABLE>

Thanks! In fact it takes a lot of time to order this valve. So i should visit a dealer, pay him about $50 and after that a have to wait for a week o two. :-(

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Old Aug 14, 2003 | 08:21 AM
  #11  
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Default Re: How to test PCV valve (cletus)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cletus &raquo;</TD></TR><TR><TD CLASS="quote">

seriously it took you 45 mins to change the pcv??????? wow that is an eternity.......how long does it take to change the oil in your car????</TD></TR></TABLE>

15 minutes, with around 5 to get it jacked up and on stands.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Integras have them buried underneath the intake manifold, on top of the breather box which is attached to the back of the block.</TD></TR></TABLE>

I think this explains it.
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Old Aug 14, 2003 | 08:25 AM
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Default Re: How to test PCV valve (SergZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SergZ &raquo;</TD></TR><TR><TD CLASS="quote">

Thanks! In fact it takes a lot of time to order this valve. So i should visit a dealer, pay him about $50 and after that a have to wait for a week o two. :-(

</TD></TR></TABLE>

$50 or less for both part and installation. It's down pretty far to easily do it yourself, even w/ very long nose pliers. I'm sure there's a trick to it.

You probably should've bought a Euro made car for the sake of parts availability.
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Old Aug 14, 2003 | 12:00 PM
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Default Re: How to test PCV valve (typeR0059)

yes please post, cuz i swear my teg's PCV valve is right on the valve cover
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Old Aug 14, 2003 | 04:50 PM
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I've replaced about a hundred of these things at my old job and a few on my teg. A set of 90 degree (angled) needlenose plyers is all you need. It sits on top of the intake manifold underneath the fuel rail. Takes 5 min.
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Old Aug 14, 2003 | 05:26 PM
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Default Re: (RayB)

is it different for vtec and not vtec?
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Old Aug 14, 2003 | 06:27 PM
  #16  
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Default Re: How to test PCV valve (stock97)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stock97 &raquo;</TD></TR><TR><TD CLASS="quote">yes please post, cuz i swear my teg's PCV valve is right on the valve cover</TD></TR></TABLE>

non vtec ie ls has the pvc valve on the valve cover. the vtec engines have it on a box under the manifold.

Carlo
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Old Aug 14, 2003 | 11:32 PM
  #17  
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Default Re: How to test PCV valve (One Bad GeeSeeR)

what does the pcv valve do... orrrrr what does pcv stand for?
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Old Aug 15, 2003 | 12:27 AM
  #18  
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From: Moscow, Russia
Default Re: How to test PCV valve (Bill Hook)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bill Hook &raquo;</TD></TR><TR><TD CLASS="quote">

$50 or less for both part and installation. It's down pretty far to easily do it yourself, even w/ very long nose pliers. I'm sure there's a trick to it.

You probably should've bought a Euro made car for the sake of parts availability.</TD></TR></TABLE>
50 for part only.
PCV is the same for European and Japan market cars. There are no GSR in Europe. Onle TypeR and it is very hard to find it in good condition.
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Old Aug 15, 2003 | 02:50 AM
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Default Re: How to test PCV valve (SergZ)

PCV Valve:
Positive Crankcase Ventilation Valve.

I forgot the exact use of the part, but I think it protects your engine from vacuum leak. I don't remember from Auto. Don't trust me.

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Old Aug 15, 2003 | 09:08 AM
  #20  
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Default Re: How to test PCV valve (SergZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SergZ &raquo;</TD></TR><TR><TD CLASS="quote">
50 for part only.
PCV is the same for European and Japan market cars. There are no GSR in Europe. Onle TypeR and it is very hard to find it in good condition.
</TD></TR></TABLE>


No, I was saying that if Japanese cars are hard to get parts for there, a BMW, Mercedes, Audi, etc. would be a better choice. I didn't realize GSR/SIR/VTI wasn't available there.

I guess you have to spend $50. A catch can may be a good idea, as it'll keep alot of the oil vapors out that gum up the valve.
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Old Aug 18, 2003 | 04:07 AM
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Default Re: How to test PCV valve (HamsterBall)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HamsterBall &raquo;</TD></TR><TR><TD CLASS="quote">PCV Valve:
Positive Crankcase Ventilation Valve.

I forgot the exact use of the part, but I think it protects your engine from vacuum leak. I don't remember from Auto. Don't trust me.
</TD></TR></TABLE>
In the 'old days' there was a crankcase vent. Just a tube or something so the crankcase didn't get pressurized. Often it was an oil filler cap that had a vent.

But the EPA didn't like the crankcase vapors just going out into the air, so they changed the rules. Now all cars have some kind of PCV system. It takes crankcase vapors & sucks them into the intake manifold so they get burned up in the engine.
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Old Aug 18, 2003 | 04:13 AM
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Default Re: How to test PCV valve (JimBlake)

I heard some buy with a supra talking about how he took off his pcv valve removed the little ball that is inside, then put it back on. He was saying something about how this will help when he goes into boost. I have no idea.... anyone know if this helps?
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Old Aug 18, 2003 | 09:35 AM
  #23  
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Default Re: How to test PCV valve (acatak)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acatak &raquo;</TD></TR><TR><TD CLASS="quote">I heard some buy with a supra talking about how he took off his pcv valve removed the little ball that is inside, then put it back on. He was saying something about how this will help when he goes into boost. I have no idea.... anyone know if this helps?</TD></TR></TABLE>Turbos need strange things for PCV systems, & I don't know the details for Supras. Besides, if it's not a factory turbo, then anything goes.

Saab turbos have a check valve, so when you're in boost the crankcase doesn't get pressurized. In boost, any blowby flows thru the breather into the air inlet (upstream of the compressor).

Honda PCV valves act like a check valve, too, they close under boost. Without a factory turbo, I don't know why Honda designed them that way.

Without knowing the rest of the plumbing for the Supra, I'd guess he should NOT have taken the ball out. Seems backwards, because you don't want to pressurize your crankcase. Crankshaft seals probably aren't made for much pressure. But even if it didn't do any damage, I don't understand how it would help performance.
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