Quote:
Originally Posted by Damage
I just finished my hard runs for tonight and when I got home I hear ticking now like valves or something, very noticeable. I did hit 6000 once to shift but big deal, should handle that.  You think I screwed somethin? |
If you already have 800miles on the car the lifters should have already went south on you if there was a problem with them. If this is an LS3 engine I will say there's a 99.5% chance that nothing is wrong with the lifters or valve train. The LS3 engne is very robust up to 6500-6600rpm.
If this is an L99 engine you have a bout a 90% chance that nothing is wrong. The AFM lifters have caused problems for some but the chance is slim. What you might be hearing is the lifter noise that has always been there but now, your listening for it so the sound "seems" louder. LOL Because your lisenting for it, you hear it. Valve train noise is always there and some is exceptable but if you hear a super high pitched tinny sound like clacking two large ball bearings together, you probably have an issue. The sound should be VERY LOCALIZED and much louder than any surrounding noise when listening for it using the stethoscope or screw driver ( see below). Any rocker or lifter that's loose will JUMP out at you when you place the screw driver/stethoscope over it on the valve cover.
I cant diagnase it over the message board of course but after following these directions you still feel you have a problem, get into the dealership and have it looked at! Valve train issues are nothing to screw with.
I use a stethoscope to hear and diagnose a valve train issue because when it comes to engine noises, they can make your mind hear things that are not there. There is another way to hear or isolate a rocker or lifter with clearance problems. Take a screw driver and hold the handle tight to your ear. Lay it on the valve cover starting at the front and moving to the back. The screw driver against your ear will amplify the local sound under the region of valve cover its touching. Once you go all over the valve cover you will hear (very noticeably) if one area is louder than another.