dan lazer

so i have posted b4 and sum of you may have read that i have a oil leak---sum say its the rear main seal

i actually went and got my tranny fluid changed yesterday and the mechanic had it up on the lift and looked and said it was in fact the rear main seal thats leaking

he also said that maybe that the PCV valve may be clogged up and when that happens that the oil has to go sumwhere so MAYBE its pushing it out of the rear main seal

does any1 know if this is true and how it gets clogged up--and where is the PCV located on a 99 TL

THANKS GUYS !!!!

justnspace

iTrader: (1)

you can simply replace the PCV valve.

when you open your hood there should be a diagram. it will show you where the PCV valve is.

dan lazer

and where is this diagram at ???

can ya post a pic

and sorry if these are dumb questions----i did use the search and found sum trends on it----but there was no pics !!

justnspace

iTrader: (1)

open your hood and read all the diagrams/stickers.

there will be a sticker talking about R134a.
then theres a diagram of the whole engine and it will name parts like the pcv valve and where its located.

01tl4tl

the metal tube that runs across front of engine to the air intake tube--from airbox to TB
thats the pcv line

on the passenger side end of the tube-- is a valve thats replaceable- take it off and shake it-if it shakes and makes noise its working!!,,very cheap to replace

you cleaned the TB air plate recently didnt you? how did it look?
the pcv feeds partially unburnt fuel and oil vapors back to the TB for reburning = smog control

your winter cold starts with no running or drive time may have contributed to extra crud
Does the valve shake in your hand?

friesm2000

iTrader: (4)

i will help the OP some, but not all cars still have those stickers though, depending on if the hood has been replaced before or not (the one thing that domestics do do better, is placing those stickers on parts not so easily removable/replaceable, such as the cowl, or strut towers)

fsttyms1

Actually the PCV valve is on the rear valve cover.

01tl4tl

doh!-- Is the valve itself on the rear?
and the tube for it runs across the front?
I have only seen where it connects to the air tube

mrl_tl

A is the pcv

dan lazer

THANKS GUYS !!!!

appreciate the help

but is it true that if the PCV is not working that the oil leak i have is because of that not working ????

dan lazer

thanks man----and yea i did clean the EGR ports and the intake manifold and the whole throttle body and plate

and honestley the whole inside of the throttle body and plate was fucking black as hell !!!

but i will take that valve off in the morning and see whats good with it

01tl4tl

you can usually service the pcv valve with carb cleaner and deep creep- to relube it
or buy one at parts store fairly cheap
If it were totally plugged it could cause excess crankcase pressure and lead to rear main failure--
that would be taking the thinking to an extreme--but you never know
Its worth the few minutes to inspect both lines- a and b in the diagram,,only 1 has the check valve appearently

totaledTL

They are generally very cheap- may as well replace it.

Carbuff

Yes, a clogged PCV can result in excess crankcase pressure that would drive oil out of various seals.

PCV = Positive Crankcase Ventilation

It's just a one-way valve. 01tl4tl said how to check it in his first post (the ol' Shake Test)

01tl4tl

in most cars its never an issue
but the OP stored the car over winter- and kept starting it for short periods
when the full rich fuel mixture is not burning fully, can lead to other problems....

tip: to store car- seafoam or stabil- fuel storage product run thru engine by gas tank
Fog it with seafoam then disconnect neg cable (take battery inside warm dry place preferred) and leave the car alone until ready to use again

People think running something 10-15 miutes is good for it, to `keep everything moving`
all the while they are causing condensation and sludge issues because nothing gets hot enough to dry out!

fsttyms1

I dont think it would be the problem as there is also a breather tube on the front valve cover.

friesm2000

iTrader: (4)

that front valve cover opening is designed to let fresh air into the crankcase, while the PCV is designed to suck all the crankcase gases out,
well if it is not even able to create the slightest vacuum due to being plug, it cannot lower the crankcase pressure any (or at least get fresh air always moving inside the engine; let alone "sucking" out the excess pressure from any sort of blowby you get, basically one more opening for it to escape), which is then going to run higher then it does normally

01tl4tl

ok we have decided--replace it and be certain
your tech mentioned it for a reason... with the rear main seal job

fsttyms1

both of mine draw out (intake pulls both)

01tl4tl

fries is probably running a vented cap and catch can for his pcv~

do they even have smog regs at altitude?

dan lazer

well sure enough guys----i pulled that fucker off and did the shake test----IT WAS CLOGGED

i had my girl run to the STEALERship and get 1 and im putting it on in about 20 mins

i'll let ya's know what the outcome is !!!!

01tl4tl

reduced oil drippage hopefully!!

guess we all should ck the pcv.... such a simple device that can cause problems

dan lazer

true that man

its fuckin amazing how such a lil part can cause problems

goin to install right now and keep yas updated

totaledTL

Is it on yet?

01tl4tl

hopefully he is out test driving !!
and drip is marginal when internal pressure is reduced

dan lazer

ITS ON !!!!!

i'll be taking my car to my shop in the morning and puttin it on the lift and degrease the whole underneath and see if it drips oil yet

hopefully it doesnt -----we'll see though

totaledTL

Good luck, but don't get your hopes too high that it will just quit leaking.

01tl4tl

stop by the tech and give him a real thumbs up for us on this catch!

and he didnt even test yours- guessed based on some experience or past learning that said--when pressure may be involved,,ck and replace the valve that controls the pressure system

how much was the pcv at dealer..did you ck parts store price?

01tl4tl

wonder if the dealer or other shop tech would have put it together mentally--or replace the main seal and send you down the road,,,without wondering WHY it failed

4 months later--just past 90 day warranty, it blows another seal,,,,

fsttyms1

He didnt say it fixed it.

dan lazer

the tech that told me about it----his shop is connected to our detail shop----and i did thank him

dan lazer

sooo i put my car on the lift and degreased the shit outta the whole underneath and dried it completley

so then my mom came and picked up my car-----yeaaaaa my mom rocks out a sick ass TL-----i'll be lookin underneath it when she gets home to see if the oil is still leaking ( hopefully not ) but we'll see

i'll post up in a lil bit and tell yas what i see so far

01tl4tl

he doesnt know its fixed--but definetly was a problem with gunged up pcv not operating

dan lazer

WELL GUYS

all the hype is over----although it didnt fix the oil leak completley

IT DEFINETLEY slowed the oil leak down----sooo i guess replacing the PCV valve helped a lil bit

ON THE THE NEXT ONE !!!!------replacing the rear main seal

01tl4tl

at least now its not puking oil while its running
the extra pressure from clogged egr would make me seafoam the oil system for sure,,
the drive it a week method, which helps clean the pcv,,the oil pickup screen

considering it sat over winter but was run long enough to create more moisture....
gas tank, oil and manifold if it were my car
along with all new fluids of course

dan lazer

yea i feel ya man----god its so fuckin annoying
im gonna seafoam the oil tomarrow morning and change it out on sunday morning for sure

thanks for the help guys

dan lazer

YOU GUYS WILL NEVER FUCKIN BELIEVE THIS

i washed my car on saturday and degreased the underneath of my car

i put my car on the lift today at my shop-------the oil leak is gone

no oil drippng ANYWHERE----i couldnt fuckin believe my eyes guys

so the PCV VALVE obviously did the job and saved me $1000

im 1 happy mothefucker

totaledTL

That's fantastic.
Everybody chk. their pcv valves-

Karanx7

iTrader: (2)

I'm still a little confused. Sooo, there are two tubes related to the PCV. Which one feeds unburnt gas back into combustion, and which one sucks in air? Or do they both do the same thing?

I remember seeing people put a breather filter on the front one. I'm guessing that means the front one feeds the unburnt fuel into the throttle?

dan lazer

the rear tube sucks the pressure out of the engine and if that valve is clogged---the pressure in the engine builds up and pushes oil out of seals

all i know is im in fuckn shock right now----after i put the new valve in it still dripped for a few days----but then all of a sudden stopped and its been like a week now

so it obvioulsy did the trick