ive got a 95 z28, with what im assuming r stock rockers, its been making a funny kinda knocking/clicking/clanking noise, anyways ive got the valve cover off and 6 of the 8 on the pass side or pretty loose, they move side to side and the valve gets off set when i move the rocker. how tight do i need the rockers to be, how much torque, r they supposed to be that loose. any help is greatly appreciated as i need to have this done by the morning

 

The rocker should move side to side...the two that won't move side to side have pressure on them from the valve being open. As long as there is no gap between the rocker and the pushrod/valve, they should be fine. Are any of the jam nuts loose on any of the rockers?

 

what do u mean jam nuts, i havent tried tightening them yet cus i dont wanna possibly over torque them

 

OK.

The rocker sits on a 3/8" stud which is attached to the head. The rocker arm sits on this stud and above the rocker arm is a jam nut (looks like a regular nut). Inside the jam nut is a poly lock. If you have a loose rocker arm, the poly lock/nut will most likely be loose. The poly lock uses an allan wrench (I want to say a 7/32" but I'm not certain). Check that both the nut and the poly lock are tight.

Next, check for any excessive play in the rocker arms. If there is a gap between the rocker arm and the valve/pushrod, you may have a loose rocker, collapsed lifter, bent valve or bent pushrod...but it's most likely a loose rocker. If there is no upward/downward play your rockers are most likely OK.

Describe the noise a little better if you can.

 

Stock rockers don't have jam nuts, your thinking roller rockers

Start the car and tighten them ones making the noise until they stop making the clacking, then take it about 1/2 turn extra and see if that does it

-Shannon

 

it actually sounds like a chirping, its not a systematic thing, its really hard to explain, ive been thinking it might possibly be an injector but not sure what a bad one would sound like

 

lol, thanks. Been so long since I have seen a factory rocker. Disregard most of what I said deadhead.

 

Don't feel bad, I typed almost the exact same thing before I re-read the post to see which brand he had...Lol

-Shannon

 

ok i was gonna say i cant find the jam nut ur talking about. will starting the car with the valve cover off hurt it, or do any damage

 

Starting the car with the valve cover off won't hurt anything. Do as Shannon said and let us know.

 

will it blow oil or anything all over the place

 

Only if you rev it up somewhat high.

 

this is gonna sound really stupid, but how do u get the tensioner to move in order to get the belt on. i had to move the alternator to get the cover off

 

ive gotta get the belt back on before i can start the car, and it wont go on the same way i got it off

 

You can actually run the car for quite a while w/the belt off. It will run off the battery for quite a while. I wouldn't run it more than 5-10 minutes w/out the belt on though.