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

Change your PCV Valve!!!

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Old 08-20-2009, 10:40 PM
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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.
Old 08-20-2009, 10:44 PM
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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.
Old 08-20-2009, 10:46 PM
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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
Old 08-20-2009, 10:47 PM
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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?
Old 08-20-2009, 11:02 PM
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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.
Old 08-20-2009, 11:04 PM
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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
Old 08-20-2009, 11:06 PM
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yes i am
Old 08-20-2009, 11:09 PM
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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
Old 08-21-2009, 02:03 PM
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where did you have the oil leak coming from?
Old 08-21-2009, 03:25 PM
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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.
Old 08-21-2009, 06:55 PM
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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
Old 08-21-2009, 06:56 PM
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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



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