Recent Topics
API 1509 Updated with New GF-6B Shield
by Solarent. 07/17/19 07:27 AM
Car Vac Recommendations
by klt1986. 07/17/19 07:05 AM
ECU Cooling
by ET16. 07/17/19 05:58 AM
How's your idle?
by SteveSRT8. 07/17/19 05:47 AM
A01s From Korea branded FourGreen?
by David1. 07/17/19 05:01 AM
New pennzoil rebate 7/16-12/31/19
by pdxglocker9mm. 07/17/19 03:11 AM
'82 BMW 733i M30 - Which Oil
by TXCarGeek. 07/17/19 02:07 AM
Aother MEGA score+Free Mobil 1 oil change
by GMguy84. 07/17/19 12:39 AM
I think I need therapy...
by tony1679. 07/16/19 11:53 PM
Hellcat engine in a Miata
by hate2work. 07/16/19 09:59 PM
Alignment shop questions
by Jeff999. 07/16/19 09:45 PM
ZF Aftermarket, Why Change Your ATF
by BMWTurboDzl. 07/16/19 08:10 PM
Goodyear Wrangler DuraTrac
by NHRATA. 07/16/19 08:05 PM
5 qt Castrol GTX Magnatec 5w-30 $10.30 on Amazon
by gallydif. 07/16/19 07:59 PM
My new rig - 1987 Ford Econoline 27' Glendale RV
by caprice_2nv. 07/16/19 07:44 PM
Air Compressor OCI?
by Vern_in_IL. 07/16/19 07:35 PM
Looking for an SUV
by dgunay. 07/16/19 07:29 PM
Castrol GTX Magnatec 5w30
by Envoyguy. 07/16/19 07:21 PM
2019 Subaru Dual X-Mode
by buster. 07/16/19 06:36 PM
Newest Members
guru2019, MBhuntington, captainfloss, Lyndol, Belczek
68682 Registered Users
Who's Online Now
106 registered members (87sammy, Alfred_B, 4WD, AandPDan, 69GTX, 2010Civic, 9 invisible), 1,955 guests, and 22 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics291,979
Posts5,014,505
Members68,682
Most Online2,967
Mar 10th, 2019
Donate to BITOG
Hop To
Page 1 of 2 1 2
PCV Valve Cleaning Replacement ? #5142736
06/24/19 11:54 AM
06/24/19 11:54 AM
Joined: Sep 2010
Posts: 2,394
GA.
ChrisD46 Offline OP
ChrisD46  Offline OP

Joined: Sep 2010
Posts: 2,394
GA.
The Elantra (just over 100K miles) in my sig. is due for a PCV valve replacement ... The car doesn't burn any oil , has always used synthetic oil with OCI's of less than 6K miles and when the oil comes out it's still a dark amber and doesn't smell burnt .
I'm guessing that over time a PCV valve deteriorates in performance leading to engine varnish , sludge , etc. ... I figure a decent maintenance schedule is to clean the PCV valve ever 25K miles and replace at 100K miles ? Lastly , I'm sure (as I) there are a large group of people who never pay attention to their PCV valves ... My only redemption (maybe ) is that I use the latest spec synthetic 5W20 / 5W30 in my vehicles since new and change the oil & oil filter < 6K miles each time . Your thoughts on PCV valve maintenance ?


'17 Hyundai Sonata 2.4L GDI 5W30 Valvoline Advanced Syn / Fram Ultra
'10 Hyundai Elantra 2.0L 5W30 QSUD / Fram Ultra
'07 Kia Sedona 3.8L 5W30 M1 EP HM / Fram Ultra
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142740
06/24/19 11:58 AM
06/24/19 11:58 AM
Joined: Oct 2009
Posts: 4,910
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline

Joined: Oct 2009
Posts: 4,910
Wet side WA
They are so cheap I just replace mine I've tried cleaning them with less than favorable result. I can get a new one for less that $8.


2004 Corolla 134004
Out: EDGE EP 5W-30 Bosch 3311 7156 Miles
In: Havoline Pro DS 10w-30 Purolator PureOne 3-14-19 129693
2006 Duramax 75175
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: PCV Valve Cleaning Replacement ? [Re: JohnnyJohnson] #5142788
06/24/19 12:47 PM
06/24/19 12:47 PM
Joined: Dec 2016
Posts: 692
E. Tennessee
WhizkidTN Offline
WhizkidTN  Offline

Joined: Dec 2016
Posts: 692
E. Tennessee
OP: Just replace it with the OEM one. Super simple.

FWIW: I'm still running my original PCV valve but it works great (I test it) and I have cleaned it in the past with CRC Throttle body cleaner (wasn't really dirty, but easy to do).
Just go easy on the plastic threads and don't forget about the O-ring (lube with fresh oil).

Last edited by WhizkidTN; 06/24/19 12:47 PM.

His: '12 Kia Optima SX - 2.0L GDI Twin-Scroll Turbo [Tuned] (82K)
>EDGE 0W-40, Fram XG9688
Her's: '14 Nissan Rogue SL AWD - 2.5L NA (87K)
>EDGE 0W-20, Fram XG6607
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142798
06/24/19 12:55 PM
06/24/19 12:55 PM
Joined: May 2007
Posts: 654
Indiana
njohnson Online content
njohnson  Online Content

Joined: May 2007
Posts: 654
Indiana
I wonder if the shape and the size of the PCV valve makes a difference? Our two SUVs have small plastic PCV valves. On the one SUV, I didn't change it or clean it like I should have. It had deposit buildup bad enough that it didn't rattle anymore. Our dad has a 2006 Tundra with the 4.7L V8. I checked the PCV valve at around 100,000 miles, it is the original factory PCV valve. It is metal and is threaded into the valve cover. It is also probably around double the size of the SUV's valves.
I checked it, wondering if it was starting to clog up. I was curious because, not only is the valve bigger, but, we have used synthetic oil since the factory fill was dumped.
Unscrewed the PCV valve, it still rattled. Started the truck up, and put my thumb over the end. It about pulled some of the flesh of my thumb into the valve! Lots of suction.

I was happy with that. What made the difference? The size of the PCV valve? Or the use of synthetic oil since new?

Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142803
06/24/19 01:02 PM
06/24/19 01:02 PM
Joined: Sep 2002
Posts: 3,678
Arkansastan
Propflux01 Offline
Propflux01  Offline

Joined: Sep 2002
Posts: 3,678
Arkansastan
Probably both.


2014 Hyundai Elantra
2014 Hyundai Elantra GT

A 55 Gallon Drum And A Shovel Can Solve A lot of Life's Little "Problems"
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142829
06/24/19 01:26 PM
06/24/19 01:26 PM
Joined: Apr 2013
Posts: 2,692
The Northeast
mclasser Offline
mclasser  Offline

Joined: Apr 2013
Posts: 2,692
The Northeast
I've only changed a PCV valve once - on my Accord at like 160k miles. Did it purely b/c I heard it's something that should be replaced periodically, not b/c there was any problem. The factory one still rattled and looked fine. Changed it out anyway and noticed no difference.

I'm only going to change one now if I have a problem, e.g., oil burning, rough idle, visibly damaged, and etc. If it ain't broke.....


2018 Hyundai Elantra VE
2013 Honda Pilot EX-L 4WD
2002 Honda Accord EX-L

Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142894
06/24/19 02:50 PM
06/24/19 02:50 PM
Joined: Jun 2002
Posts: 13,130
The Motor City
Kestas Offline
Global Moderator
Kestas  Offline
Global Moderator

Joined: Jun 2002
Posts: 13,130
The Motor City
I've seen dealers carry high-flow versions for those cars with high blow-by.

Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142967
06/24/19 04:19 PM
06/24/19 04:19 PM
Joined: Dec 2016
Posts: 9,119
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 9,119
Waco, TX
The one for my 2008 4.6L F150 is electrically heated (???) and gets "destroyed" when removed from the valve cover.

It's almost $50!!! ( $41.79 from RockAuto plus shipping)

If it ain't broke......... you know

I pull the hose off the top of it, and spray a little Berryman's B-12 spray down through it every 6 months.

I'll never replace it until it absolutely *NEEDS* to be replaced. Until then, I just clean it once in a while.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142973
06/24/19 04:28 PM
06/24/19 04:28 PM
Joined: Sep 2018
Posts: 677
Michigan
Kjmack Offline
Kjmack  Offline

Joined: Sep 2018
Posts: 677
Michigan
VW PCV is $ 160-180 range

Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5142983
06/24/19 04:42 PM
06/24/19 04:42 PM
Joined: Jun 2015
Posts: 5,358
New England
Virtus_Probi Offline
Virtus_Probi  Offline

Joined: Jun 2015
Posts: 5,358
New England
I had a dealer do a PCV valve replacement for me at a 90+kmile service (closer to 100k) even though I had purchased one on my own for $8-9 some time before. I really didn't want to pull that intercooler myself, I admit it...I mangled it a bit by barely touching it when it was new!!
Among a number of other odd things at that service, they charged me for 2 PCVs @ $20 each!
I can't find a parts diagram for the FA20DIT engine that shows the PCV valve...does it actually have two of them???


2014 Forester XT, 100000 miles
Last Change;
M1 10W30 HM SN+
Tokyo Roki 15208AA170 filter
Re: PCV Valve Cleaning Replacement ? [Re: Virtus_Probi] #5143448
06/25/19 07:23 AM
06/25/19 07:23 AM
Joined: Jun 2015
Posts: 5,358
New England
Virtus_Probi Offline
Virtus_Probi  Offline

Joined: Jun 2015
Posts: 5,358
New England
Originally Posted by Virtus_Probi
I had a dealer do a PCV valve replacement for me at a 90+kmile service (closer to 100k) even though I had purchased one on my own for $8-9 some time before. I really didn't want to pull that intercooler myself, I admit it...I mangled it a bit by barely touching it when it was new!!
Among a number of other odd things at that service, they charged me for 2 PCVs @ $20 each!
I can't find a parts diagram for the FA20DIT engine that shows the PCV valve...does it actually have two of them???

Well, I did find a parts diagram and whatever I bought a while ago isn't the PCV valve.
Looks like I bought the "Hose Assembly-Pcv" and I should have bought "Valve Complete-Control".
Guess I'm a dummy for thinking the part with PCV in its name was the PCV valve!!!

Still don't think my car has 2 PCVs....I have had 3 Subaru dealers just hose me on service in the last couple of years between our two cars.
Gotta learn to do more myself!!!!


2014 Forester XT, 100000 miles
Last Change;
M1 10W30 HM SN+
Tokyo Roki 15208AA170 filter
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5143456
06/25/19 07:28 AM
06/25/19 07:28 AM
Joined: Sep 2010
Posts: 2,394
GA.
ChrisD46 Offline OP
ChrisD46  Offline OP

Joined: Sep 2010
Posts: 2,394
GA.
OP here : Thanks for the replies ... I decided to buy OEM PCV valves (on-line) to ensure I had the right fit ... The ones shown at Autozone , etc. were less expensive but looked different . Not sure if there is a quality difference but considering it's not something I have to replace so frequently I decided on the OEM PCV vales and call it a day .


'17 Hyundai Sonata 2.4L GDI 5W30 Valvoline Advanced Syn / Fram Ultra
'10 Hyundai Elantra 2.0L 5W30 QSUD / Fram Ultra
'07 Kia Sedona 3.8L 5W30 M1 EP HM / Fram Ultra
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5143840
06/25/19 03:14 PM
06/25/19 03:14 PM
Joined: Jan 2011
Posts: 561
California
DGXR Offline
DGXR  Offline

Joined: Jan 2011
Posts: 561
California
I went to replace the PCV in my Tacoma at 150,000 miles simply due to time and mileage. But I bought the wrong replacement valve (CA models have threaded install, not the typical grommet and push-on fit). So I cleaned, lubed and reinstalled the existing one which seemed to be working fine, and still have no issues. No burning oil, no smoke.


1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 Base SR5 AC
1999 Yamaha YZ400FL
2003 Honda XR400R
Re: PCV Valve Cleaning Replacement ? [Re: Linctex] #5144062
06/25/19 08:13 PM
06/25/19 08:13 PM
Joined: Dec 2013
Posts: 3,362
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline

Joined: Dec 2013
Posts: 3,362
Fort Worth, Texas
Originally Posted by Linctex
The one for my 2008 4.6L F150 is electrically heated (???) and gets "destroyed" when removed from the valve cover.

It's almost $50!!! ( $41.79 from RockAuto plus shipping)

If it ain't broke......... you know

I pull the hose off the top of it, and spray a little Berryman's B-12 spray down through it every 6 months.

I'll never replace it until it absolutely *NEEDS* to be replaced. Until then, I just clean it once in a while.



The little lock breaks off them, But doesn't destroy it. I've ran across those during engine swaps ('04 4.6L into a '05 model truck for example)......They're "Turn to Lock/Seat" with a O-ring seal like a lot of oil caps. Oil caps don't come off by themselves.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: PCV Valve Cleaning Replacement ? [Re: ChrisD46] #5144607
06/26/19 12:22 PM
06/26/19 12:22 PM
Joined: Jan 2004
Posts: 5,356
California
nthach Offline
nthach  Offline

Joined: Jan 2004
Posts: 5,356
California
If the valve is easily replaced, it doesn't hurt. Stick with OEM. On most cars, unless it's a chronic sludge monster or has a poorly-designed PCV system, there might not be a need to touch the PCV valve unless there is a driveablity concern. The PCV system does interact with manifold vacuum.

Page 1 of 2 1 2
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™