PCV Valve or no PCV valve [Archive]

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92RAGTOP

11-29-06, 08:29 PM

My 92 LT1 does not have a PCV valve on the valve cover. It has a 90 degree elbow that is the same dia. as a PCV valve. I was in Pep Boys today to pick up oil & filter and I noticed that the FRAM and PUROLATOR reference books both call for a PCV valve for a 92. What do you think? Why would it not have a PCV valve?

Silver O Six

11-29-06, 08:46 PM

;cc

;aw

DanS711

11-29-06, 09:35 PM

I will have to take a look at mine Don. The only reason the PCV valve is there is to keep a backfire from firing back into the engine. Did you check where it goes into the intake?

DS

92RAGTOP

11-29-06, 09:46 PM

I didn't trace the hose back put I'm figuring it goes back to the intake system. Maybe because it does not have a intake manifold with a carb the chance of a backfire is eliminated and a PCV is not needed????

DanS711

11-29-06, 09:52 PM

It may screw into the intake manifold, they can still backfire and the plentum is your intake manifold.

DS

kennedys22

12-01-06, 09:40 AM

My '91 has a PCV valve on the driver's side, but on the passenger side I have the 90 degree dummy elbow. Do you have a PCV on the driver's side?

92RAGTOP

12-01-06, 10:02 AM

The driver side valve cover is solid. On the passenger side I have the oil filler cap and the 90 degree elbow. This is very confusing the 91 is a LT1 isn't it?
:confused:

Richy

12-01-06, 10:19 AM

Don,ask Tony or Frank Schmidt( C4 mavens).

Tony B.96LT4

12-01-06, 11:36 AM

Don--PCV is located on the drivers side intake manifold, under the fuel rail cover. 1991 was last year for the L98(has traditional distributor). LT1 and Opti-Spark were introduced in 1992 and ran till 1996. LT4 was the High Performance LT1 made only in 1996.

92RAGTOP

12-01-06, 03:59 PM

Thanks Tony, looks like i'll have to go digging for it. I don't know why they took it off the valve cover it seems to have work pretty good there for the last 20 or 30 years.:rolleyes:

Tony B.96LT4

12-01-06, 06:42 PM

Don, the hose should go from the PCV to a tube that's in the underside of the throttle body.:)

92RAGTOP

12-10-06, 09:39 AM

Finally had the time to hunt for my PCV valve. I FOUND IT!!! Check out the pix.

Richy

12-10-06, 09:52 AM

Jeez,RAGMOP,it looked like Brittany had found the PC valve.

92RAGTOP

12-10-06, 10:17 AM

He Richy for a split second I started to feel bad for you after reading all the posts in Marks 'Join In' thread. But then I realized it was only gas. Now I'm happy they're hammering you. ;bl ;bl ;bl ;bl