midnight01

Don't get me wrong, sometimes it does come back even at normal temps, its a strange one but I plan on swapping out the lifters, pushrods, and valve springs anyways since she has high mileage.

El original

Let us know if it solves the noise issue. I am convinced it is a lifter clicking until warmed up. Nothing to worry about. I have a SSR with the 5.3 vortec, so QUIET from cold to hot I have to put my ear to it to confirm it is running! Not all V8's are noisy!

bwill03z

I have a 2011 silverado 5.3 and it'quiet too. You can here lifter noise but it's not loud at all. I thought about buying new lifters, cups and pushrods but my luck I would swap them out and end up with the same lifter noise. I really don't have the time to do it and labor on that would prob be over a grand.

bwill03z

I read a bulletin about a ticking sound caused by a bad oil pump o-ring. It said it can be misdiagnosed as a lifter problem, has anyone had any experience with that??

Rob 02

Oil pressure suffers with a bad or wrong sized O-ring. How is your oil pressure?

bwill03z

Oil pressure has been fine with the exception of the other day. Took it out and oil pressure dropped to 0 while driving through town, I posted a thread with a video about.. I believe that may be a failing OPS. Other than that oil pressure is good.

Rob 02

I use a cheep mechanics stethoscope and listen to everything.
Mine was making a loud popping sound and believe it or not it was an exhaust leak.
The AIR check valves can get noisy.
The fuel injectors can get loud.
You can have arking from a bad plug wire or connection.
There could be something failing being driven by the belt.

You really need a way to localize the noise.

bwill03z

I bought a mechanics stethoscope the other day and Im going to listen this weekend and try to pinpoint the noise. Ive tried before with a long screwdriver but didnt have much luck because it seemed to be coming from down in the motor under the intake

vettenuts

Did this just start or has this gone on since you bought the car? I had an issue with mine many years ago coming back from Bowling Green. A lot of low RPM 6th gear driving caused some carbon deposits that would rock the piston on cold start. Sounded like piston slap because my Pontiac had piston slap bad. I did a carbon cleaning and have never had the issue again.

bwill03z

Well honestly it's hard to say. I only noticed it shortly after I had long tubes and a Dyno tune done but it could have started a while back and I just didn't notice it. I had Shorty headers on the car when I bought it so the sound shouldn't have changed that much going from shorties to Long tubes if the sound has been present from day one. I'm pretty **** about my car so I would be surprised if it's been making that sound a long time and I just never noticed it. Maybe it has been there but has recently gotten worse. The car sits alot unfortunately so I dont know if that has something to do with it or not.

bwill03z

So I used a mechanics stethoscope today to get a good listen of the tapping and it is def coming from down in the motor. I was hoping I would catch a break and find out that it was just an exhaust leak but its def not coming from the manifolds or the valve covers... it's strange though because it takes a good 2 mins for it to start after cranking. The tick doesn't seem to be AS bad now as well.

Rob 02

The earlier ones were more prone to piston slap. After 2001 They started using LS6 pistons with a slightly different profile and coated skirts.