LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Change your PCV Valve!!!

Thread Tools
 
Search this Thread
 
Old Aug 20, 2009 | 10:40 PM
  #1  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default Change your PCV Valve!!!

For months I had a slow oil leak that seemed to come out of no where. About a week ago i changed my PCV valve, and the leak has stopped. My underside is now completely dry. So if you have a leak you cant trace, try changing the valve. Its only 4 bucks at autozone and takes 2 minutes.
Reply
Old Aug 20, 2009 | 10:44 PM
  #2  
Cross's Avatar
12 Second Club
iTrader: (10)
 
Joined: Nov 2007
Posts: 1,094
Likes: 0
From: Tucson, AZ
Default

I have one and I thinkits coming from the Opti seal but it only leaks when I get on the car when its not full warmed up/aka oil pressure is higher.

I have no PCV Though last I checked. Now I am not sure maybe I will check that.
Reply
Old Aug 20, 2009 | 10:46 PM
  #3  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

looking back im not sure why i didnt think of it sooner. excess crankcase pressure forced some oil out of a seal somewhere. im pretty sure it was the crank positioning sensor. but now that the pressure is relieved, no oil is being forced out, therefore no leak
Reply
Old Aug 20, 2009 | 10:47 PM
  #4  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

Originally Posted by Cross
I have one and I thinkits coming from the Opti seal but it only leaks when I get on the car when its not full warmed up/aka oil pressure is higher.

I have no PCV Though last I checked. Now I am not sure maybe I will check that.
no PCV? are you running breathers?
Reply
Old Aug 20, 2009 | 11:02 PM
  #5  
integraxtc's Avatar
TECH Resident
iTrader: (11)
 
Joined: Jun 2007
Posts: 790
Likes: 0
From: Chicago, northside
Default

do they sell the hose from the pcv to the tb at Autozone too?

I was just thinking about doing the valve today, but didn't.
Reply
Old Aug 20, 2009 | 11:04 PM
  #6  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

Originally Posted by integraxtc
do they sell the hose from the pcv to the tb at Autozone too?

I was just thinking about doing the valve today, but didn't.
im not really sure, im sure you can go and look it up
Reply
Old Aug 20, 2009 | 11:06 PM
  #7  
Cross's Avatar
12 Second Club
iTrader: (10)
 
Joined: Nov 2007
Posts: 1,094
Likes: 0
From: Tucson, AZ
Default

yes i am
Reply
Old Aug 20, 2009 | 11:09 PM
  #8  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

Originally Posted by Cross
yes i am
if thats the case you shouldnt have the problem i was having. id say its your actual seal thats bad
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 21, 2009 | 02:03 PM
  #9  
riceburnerZ28's Avatar
TECH Fanatic
iTrader: (20)
 
Joined: Oct 2008
Posts: 1,195
Likes: 0
From: Plano, IL
Default

where did you have the oil leak coming from?
Reply
Old Aug 21, 2009 | 03:25 PM
  #10  
litch2004's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2007
Posts: 1,781
Likes: 1
From: Austin
Default

the pcv valve is not located on the valve cover like a sbc it is located on the diver side of the intake manifold and it loops right back into the intake manifold. All the elbow has is a ccv. It is just an elbow to a hard rubber line into the TB. And the hard rubber line is a dealer only item. I have been trying to buy one for a while. I just deleted theis and started running breathers now.
Reply
Old Aug 21, 2009 | 06:55 PM
  #11  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

Originally Posted by litch2004
the pcv valve is not located on the valve cover like a sbc it is located on the diver side of the intake manifold and it loops right back into the intake manifold. All the elbow has is a ccv. It is just an elbow to a hard rubber line into the TB. And the hard rubber line is a dealer only item. I have been trying to buy one for a while. I just deleted theis and started running breathers now.
1/2 inch hose from kragen works perfectly
Reply
Old Aug 21, 2009 | 06:56 PM
  #12  
hitmanws6's Avatar
Thread Starter
TECH Veteran
iTrader: (20)
 
Joined: Dec 2008
Posts: 4,041
Likes: 5
From: Orange, CA
Default

Originally Posted by riceburnerZ28
where did you have the oil leak coming from?
i honestly have no idea, im thinking the crank sensor on the timing cover. im going to rtv around it just to be sure. the oil would collect on the pan and would even go further back than that
Reply




All times are GMT -5. The time now is 10:21 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE