s2000maniac

i think i have the "knock" too, i hear when the car is warmed up and ideling. i think its normal because there was another AP1 that was doing the same thing.

edogg6565

Yea I don't know. It just really bothers me. I'm gonna pull the valve cover off and make sure a rocker isn't loose

trackrabbit21

<------- gots the knock also. When im on the highway and i'm giving it about 1/4 amount of throttle i heard it, but if i go about half or more I dont hear the knocking... As for at idle, once I rev it goes away as well. but idk. its annoying tho

edogg6565

I'm glad I'm not the only one then. Hopefully someone will figure out what it is

nissanfanatic

Does it go away when you push the clutch in?

edogg6565

Nope.

TougeS2k

I hear some ticker-tack when the engine is real cold, goes away real quick.. A soundclip would go a long way

trackrabbit21

It could be a cracked valve retainer??

towingtime

I think a good way to see if its a rod bearing is to unplug a coil pack or injector while its running to see if teh sound chages on a certain cylinder. If its a rod bearing a lot of times the knock will change or go away due to it not firing on that cylinder.

edogg6565

It's not a rod knock. I've done that test and nothing happens plus it has brand new oem rod and main bearings.