zee11

Hey guys. I've got an LS2 with 50k miles that just starting making a ticking sound under load. I've had many LS1s and LS6s in the past so I'm familiar with how noisy these things are normally, but this is definitely something else.

So basically I accelerated in 1st gear, had a little wheel hop, so let off. Ticking started right after that. Only mods are intake, catless longtubes, and exhaust.

I'm hoping it's an exhaust leak, but I've personally never had one that sounded like ticking.

You can't hear it at idle. It's pretty much only under load. For example, if I'm accelerating in 4th at 1500rpm and 15% throttle, you'll hear a steady/noticeable "tick "tick "tick" that IS rpm dependent. But if I let off the gas, the ticking sound goes away completely, despite the car still being at 1500 rpms. I don't really hear it at all if it's just idling and I rev the engine.

You guys have any ideas? The car still drives 100%, idles smoothly, etc. Thanks.

truckplay

when did it start? did you change the oil ? could you have gotten bad gas ?

if you have headers they always sound different, check your clamps. you know about the noisy injectors.

try some oil & fuel additives and hope for the best.

1fastbob

The first thing I would look at is the exhaust system. Maybe the wheel hop shook something loose on the exhaust. Check the clamps that connect the H pipe to the mufflers first and then work forward. Just my 2 cents.

C U IN REARVEIW

Header/manifold leaks can sound like a ticking sometimes......?

theVcar

I had a leaky header gasket and the tuner was listening with a stethoscope . It sounded like a broken rocker under load. My great dealer mechanic knew just about instantly it was the gasket. Gotta love a good GM mechanic.

Chevy Cust Svc

Have you made any progress on the ticking noise since your last post, zr0skilz?

Sarah (Assisting Kelly)
Chevrolet Customer Care

movado750

Just had it happen to me.

zee11

Yup! That's exactly what it was. Swapped out the header gasket and the sound is gone!

Thanks guys