Today I was messing around under the hood cleaning and whatnot and I came across some oil on the plug wire for the cylinder that is nearest to the firewall on the drivers side. So I was looking around to see where it came from and i noticed this opening in the valve cover. It was right on the edge of valve cover next to the firewall on the drivers side. I remember when I swapped my pushrods out that there was a rubber grommet/bushing thing with a bolt and a washer in it and it plugged the hole. Well now its gone and I dont know where it went and I dont konw how long I have been driving with it like this. Oil pressure is the same and the car runs normally. Could someone please tell me what this thing is? If someone has access to a diagram of that valve cover and its components I can tell you what part it is. I have a 98 z28. Please help me im freaking out. Thanks.

Robby

 

Sounds like your missing one of your rocker cover hold down bolts and grommet. I have a 97 LS1 and my rocker cover bolts are just like what you describe. The hole is larger to accomidate the grommet. You could take out one of your other rocker cover bolts and grommet and you'll see what I mean. Hope this helps.

Mark

 

This is different than a normal valve cover bolt. The rubber piece was probably an inch or inch and a half across. It isnt on the perimiter but on top of the valve cover. Ill try and get a diagram or something up.

 

Ok I found a picture. Go here...http://www.motorplace.com/flow-pcx/p...1115518463711# and then click on valve cover gasket and then gasket,valve cover 98 L (the word image by that description) and it is #6. Looks like the spot for the filler neck on the passenger side.

 

TTT please help.

 

You are probably need in item #273 in the pic. GM part #12557672, list price $4.15. Item #274 is a not serviced separately part, but comes with item #273 when you buy it. It is part of the PCV system.

 

Yea that would be it. Is there a description for that part? Thank you for taking the time to look that up for me. I really appreciate it.

 

Here ya go.

 

Thanks again you have been a huge help. Where did you find those diagrams? Those would be extremely helpful in the future.

 

I have the 93-02 Camaro parts calalog on CD. It's online somewhere to download (.pdf) Maybe someone will see this and post the link. I downloaded the Pontiac file but it doesn't work as nice as the CD version I have.

 

Where can I get that from?

 

I bought it years ago from someone selling it on one of the other LS1 boards.

 

I doubt it fell off of the car it may have just came out of the hole. Your PCV valve should be attached to a hose and it is maybe laying behind the head.

 

I remember when i pulled the valve cover that there wasnt anything attached to that rubber thing.