PCV Valve
#11
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Well, I thought about replacing the rear seal, but the car only had 128K on it, and I figured it would be good to go---wrong!
I have decided to pull the drive train out complete, then split the trans, bolt the engine to a stand and do some maintenance on it in my tiny little WARM garage. It needed the manifold work done anyway, so I figure I'll just tear the whole thing down and kinda go through it, checking things out as I go. It had a lifter tick, which I will want to fix, and it will give me the opportunity to change the bearings if they are showing any wear. It will get a new water pump and I want to do Chevythunder'* fix on the EGR pipe, too.
Off topic- sorry
I have decided to pull the drive train out complete, then split the trans, bolt the engine to a stand and do some maintenance on it in my tiny little WARM garage. It needed the manifold work done anyway, so I figure I'll just tear the whole thing down and kinda go through it, checking things out as I go. It had a lifter tick, which I will want to fix, and it will give me the opportunity to change the bearings if they are showing any wear. It will get a new water pump and I want to do Chevythunder'* fix on the EGR pipe, too.
Off topic- sorry
#12
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Hay John
You have a black o-ring that goes around the PCV valve and seals it in its bore. This o-ring can stay in the bore when the valve is removed and is hard to see, black on black. Without this o-ring you will have vacuum in the motor at idle. Remove the oil filler cap crank the car and put your hand over the hole. If your hand is held to the valve cover the PCV valve o-ring is missing or needs replacing.
When the o-ring is in place around the PCV valve it fits tightly in its bore. If you can remove or install your PCV valve easily with your fingers the o-ring is missing or needs replacing.
In Bills picture above it looks like the o-ring is still in its bore. You have to remove it from the bore and slide it on the PCV valve before reinstalling the valve.
L36 PCV valve kit comes with PCV-892C valve, black and large orange o-ring, spring and plastic cap.
Part # 89017274. $18. Dealer $11. Delco
You have a black o-ring that goes around the PCV valve and seals it in its bore. This o-ring can stay in the bore when the valve is removed and is hard to see, black on black. Without this o-ring you will have vacuum in the motor at idle. Remove the oil filler cap crank the car and put your hand over the hole. If your hand is held to the valve cover the PCV valve o-ring is missing or needs replacing.
When the o-ring is in place around the PCV valve it fits tightly in its bore. If you can remove or install your PCV valve easily with your fingers the o-ring is missing or needs replacing.
In Bills picture above it looks like the o-ring is still in its bore. You have to remove it from the bore and slide it on the PCV valve before reinstalling the valve.
L36 PCV valve kit comes with PCV-892C valve, black and large orange o-ring, spring and plastic cap.
Part # 89017274. $18. Dealer $11. Delco
#13
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True Car Nut
It does look like it - but there was no o-ring, the valve just lifted right out and I poked around in the hole and on the shoulder where the crimp sits to make sure. Should'a been there, but wasn't.
#14
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Originally Posted by ron350
Hay John
You have a black o-ring that goes around the PCV valve and seals it in its bore. This o-ring can stay in the bore when the valve is removed and is hard to see, black on black. Without this o-ring you will have vacuum in the motor at idle. Remove the oil filler cap crank the car and put your hand over the hole. If your hand is held to the valve cover the PCV valve o-ring is missing or needs replacing.
When the o-ring is in place around the PCV valve it fits tightly in its bore. If you can remove or install your PCV valve easily with your fingers the o-ring is missing or needs replacing.
In Bills picture above it looks like the o-ring is still in its bore. You have to remove it from the bore and slide it on the PCV valve before reinstalling the valve.
L36 PCV valve kit comes with PCV-892C valve, black and large orange o-ring, spring and plastic cap.
Part # 89017274. $18. Dealer $11. Delco
You have a black o-ring that goes around the PCV valve and seals it in its bore. This o-ring can stay in the bore when the valve is removed and is hard to see, black on black. Without this o-ring you will have vacuum in the motor at idle. Remove the oil filler cap crank the car and put your hand over the hole. If your hand is held to the valve cover the PCV valve o-ring is missing or needs replacing.
When the o-ring is in place around the PCV valve it fits tightly in its bore. If you can remove or install your PCV valve easily with your fingers the o-ring is missing or needs replacing.
In Bills picture above it looks like the o-ring is still in its bore. You have to remove it from the bore and slide it on the PCV valve before reinstalling the valve.
L36 PCV valve kit comes with PCV-892C valve, black and large orange o-ring, spring and plastic cap.
Part # 89017274. $18. Dealer $11. Delco
I'm also guessing that having that ring missing may cause the MAP sensor to read wrong, which could potentially cause the EGR Valve to think something is wrong. The stuff I read in my FSM made it sound like my theory is plausible...
#15
I wanted to change mine. I see there is a black thingy on top of the supercharger that says PCV. I know it has to be up uinder there somewhere. How much is it and what does it do?
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Well, I found the O ring, put it back on the PCV, and no vacuum from the oil filler. No tools to pull the battery yet, so I still got the light for now....
#17
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Originally Posted by ssesc93
I wanted to change mine. I see there is a black thingy on top of the supercharger that says PCV. I know it has to be up uinder there somewhere. How much is it and what does it do?