Aleromod.com Aleromod.com

Go Back   Aleromod.com > Performance Related > LA1 3400 Specific

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-10-2016, 09:11 PM   #1
limey
GX Member
 
Join Date: Jan 2016
Location: Canada
Posts: 12
limey is on a distinguished road
Blocked PCV

I changed the oil when I purchased the vehicle but found I needed to top up the oil after only 3K KM, the stick showed halfway yet there appeared to be no leaks.
After a search online, I found an article that describes how a PCV can cause oil loss if it is not operating correctly.
On inspection, the PCV was clogged shut and there was evidence of oil vapours being passed around the grommet leaving an oily film around the area.
I washed the valve with carb cleaner and replaced it, this until I get a new one. I guess I need to check the throttle body for gunk?
After a couple of weeks of owning the car I was not very impressed with it's performance, there was a noticeable flat spot on the accelerator pedal but since cleaning, something so simple as the pcv, the flat spot has gone and the performance is most satisfactory. I just need to keep my eye on oil consumption.
Here is an interesting link.
http://www.tegger.com/hondafaq/pcv-replace/index.html
I have searched this forum and have found little in the way of discussion on the subject of the pcv?
Regards
limey is offline   Reply With Quote
Old 02-10-2016, 11:22 PM   #2
sleepyalero
GLS member
 
sleepyalero's Avatar
 
Join Date: Aug 2010
Location: indy
Posts: 8,411
sleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond reputesleepyalero has a reputation beyond repute
Usually, a good working PCV (referring to fromt valve cover) if you pull it out, and shake it. You hear a rattle noise that means the PCV is good. If no rattle it needs replacing.
__________________
[SIGPIC]
[SIGPIC]
S. . .L. . . E . . .E. . .P. . .Y. . .IS A TRAITOR--HE GOT BORED SO HE SOLD ME AFTER HAVING AN AFFAIR WITH A RICE ROCKET
Oldsnut is my Hero!
Meet Destiny, shes a 2001 Oldsmobile Alero GLS, F40 6MT swap. (#2 of 3)
2/24/14 - 200,000 miles body/motor. 22,300 on F40.
Quote:
Originally Posted by Oldsnut View Post
He would Plasti Dip his pecker if he could.
Quote:
Originally Posted by tipnitty View Post
A girl touched my Pee Pee. So you can say things are getting pretty serious for me.
sleepyalero is offline   Reply With Quote
Old 02-13-2016, 11:41 AM   #3
zzyzzx
GLS member
 
zzyzzx's Avatar
 
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,529
zzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond repute
I just replaced a PCV Valve on my 1995 Escort. The PCV valve had around 160K miles on it and did not rattle nearly as good as the new one. The new Motorcraft one I bought off Amazon does seem to make it idle better and I could only blow air through it in one direction. Supposedly the cheap aftermaket PCV valves you see in the stores leak air backwards. It will be interesting to see if this changes my oil consumption.
zzyzzx is offline   Reply With Quote
Old 02-13-2016, 12:19 PM   #4
zzyzzx
GLS member
 
zzyzzx's Avatar
 
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,529
zzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond repute
I just got around to testing my old aftermarket PCV valve and yes I can blow through it in both directions. It just works better in one direction. This is different from the Motorcraft one, which only lets air by in one direction.
zzyzzx is offline   Reply With Quote
Old 02-14-2016, 06:04 AM   #5
falloutboy
GL Member
 
falloutboy's Avatar
 
Join Date: Aug 2005
Location: Grafenberg, Germany
Posts: 826
falloutboy is on a distinguished road
Than it is broken.
It only should go in one direction, enabling to suck oil fumes and blow-by gases out of the crankcase
__________________
My round trip through the US of A
Thanks
Julian
1979 350SB Chevrolet Camaro Project Thread
1995 Chrysler Stratus LX
1999 3.4L Oldsmobile Alero (resource page)
2002 Nissan Primera with CVT
falloutboy is offline   Reply With Quote
Old 02-14-2016, 05:34 PM   #6
AleroB888
GLS member
 
AleroB888's Avatar
 
Join Date: Nov 2007
Location: Fort Knox area, KY
Posts: 2,120
AleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond repute
I wouldn't worry about oil consumption, there would be other obvious symptoms long before that happened. PCV systems are an oily, sticky mess even when functioning properly. Check the inlet tube post-MAF for oil residue, or after the air cleaner for some models. You can also put a separate air filter on the rear inlet tube to the PCV if you want to get creative. Not technically correct, but most PCMs can compensate for the small difference in airflow metering. Consider a catch-can in line from valve to intake as well. PCV systems over time will still gum up parts of the upper intake, and in some cases allow uneven air and vapor distribution to each cylinder.
__________________
2003 GL MP62 supercharged / 2004 GLS stock
http://www.youtube.com/watch?v=hpVYZPbpPzk
AleroB888 is offline   Reply With Quote
Old 02-14-2016, 10:02 PM   #7
zzyzzx
GLS member
 
zzyzzx's Avatar
 
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,529
zzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond repute
Quote:
Originally Posted by falloutboy View Post
Than it is broken.
It only should go in one direction, enabling to suck oil fumes and blow-by gases out of the crankcase

I found numerous people posting about air going in both directions on numerous new PCV valves, the ones purchased at local auto parts stores (Fram and Purolator branded mostly) did this. The OEM ones did not do this. My Escort runs better with the new Motorcraft one.
zzyzzx is offline   Reply With Quote
Old 02-15-2016, 08:29 AM   #8
AleroB888
GLS member
 
AleroB888's Avatar
 
Join Date: Nov 2007
Location: Fort Knox area, KY
Posts: 2,120
AleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond reputeAleroB888 has a reputation beyond repute
Quote:
Originally Posted by zzyzzx View Post
I found numerous people posting about air going in both directions on numerous new PCV valves, the ones purchased at local auto parts stores (Fram and Purolator branded mostly) did this. The OEM ones did not do this. My Escort runs better with the new Motorcraft one.

It could be that the PCV valve is designed to allow a little backflow, so it won't have a tendency to stick shut when going from deep vacuum conditions to zero vacuum.
__________________
2003 GL MP62 supercharged / 2004 GLS stock
http://www.youtube.com/watch?v=hpVYZPbpPzk
AleroB888 is offline   Reply With Quote
Old 02-18-2016, 01:36 PM   #9
zzyzzx
GLS member
 
zzyzzx's Avatar
 
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,529
zzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond reputezzyzzx has a reputation beyond repute
Quote:
Originally Posted by AleroB888 View Post
It could be that the PCV valve is designed to allow a little backflow, so it won't have a tendency to stick shut when going from deep vacuum conditions to zero vacuum.

I had thought about that, but the reports I found on the internet suggests that the aftermarket PCV valves are just crap. It's not just the Motorcraft PCV valves that were doing this, all OEM ones were, irregardless of manufacturer. That and cars tended to idle better (less surging while at a stop light and stuff).
zzyzzx is offline   Reply With Quote
Old 02-18-2016, 03:33 PM   #10
falloutboy
GL Member
 
falloutboy's Avatar
 
Join Date: Aug 2005
Location: Grafenberg, Germany
Posts: 826
falloutboy is on a distinguished road
Even in the case I would repeat myself.
Quote:
Originally Posted by falloutboy View Post
Than it is broken.
It only should go in one direction, enabling to suck oil fumes and blow-by gases out of the crankcase

Everything else, doesn't make sense in terms of a working PCV-system
__________________
My round trip through the US of A
Thanks
Julian
1979 350SB Chevrolet Camaro Project Thread
1995 Chrysler Stratus LX
1999 3.4L Oldsmobile Alero (resource page)
2002 Nissan Primera with CVT
falloutboy is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 04:49 PM.


Powered by vBulletin Version 3.6.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.