chris01ta

From cold, all pretty quiet but a hint of piston slap.
When warmed up and and idleing there is a "ticking" noise that seems to be in-time with a single piston. At 1000 rpm the ticking becomes a rattle, getting louder until 1500 rpm when it just seems to go ? I revved up to say 4000 rpm and released, the rattle appears at 1500 right through to 1000 rpm then back to a ticking. When in gear (and the brake on, therefore putting the engine under load) the usual rattle at 1000-1500 is again a sigle tick, again about in time with a sigle piston.

Cant be a ring as no smoke ? Just thought someone else might have had these syptoms ? again, any help appreciated.

i have a video here of me revving to where the noise is: http://h4cker.co.uk/Rattle.wmv

Any help would be appreciated

StevieZ

iTrader: (3)

Sounds like a lifter to me. You may want to pop the valve covers and look if you can see something. Then try re-torquing your rockers. I'd give that a try before pulling the heads.

chris01ta

thanks

lrmneil

Change your pushrods

AmMscl

Sorry You have Piston slap......Just like my 2000 SS,
My 2001 TA And my friends 2002 Z28.
You described it to a tee!
Good luck getting them to fix it.
At this point I've driven 6 cars with it and convinced they all do it at some point or tone.
Maybe some people just listen a little closer then others. I don't know!
try GM PISTON SLAP .COM
Let me know what you come up with.