I'm new to the boards, and new to a 02 Z. I have a noise coming from the engine. I hate to use the word knock, but it is a slight knock. The guy at the dealership said that it is the injectors, but I dont think that is right. You guys have any suggestions. It is still under warranty. My buddy with a WS6 says that it could be a bent pushrod. Doesnt seem right though.

 

Does it knock all the time, or just first 10-20 minutes after start up..... Could be piston slap...LS1 are known for that....