r/LS1 • u/Hot_Category_461 • Jul 17 '26

Ls tick

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This ticking comes when it’s cold and goes away when it’s fully warmed up normal or is there something wrong

6 Upvotes

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2

u/badhoopty Jul 17 '26

remove the belt and run it to confirm its not an idler or belt driven component. (sounds like a dry idler bearing to me...)

1

u/Hot_Category_461 Jul 17 '26

Will try that thanks 🙏

1

u/Shatophiliac Jul 17 '26

I’m not sure anyone online will be able to tell you for sure from just this video, and especially it being phone-quality audio. I would take a long screw driver and (carefully, don’t stick it in the belt or anything) touch it to different parts of the engine. Note where the noise is loudest. I’ve been able to diagnose several noises like this just by listening around the engine to narrow down where it’s coming from.

This could be anything from piston slap to a worn out pulley on the serpentine belt or a lifter. Nothing about it screams imminent engine failure to me though, at least not from this video.

1

u/Hot_Category_461 Jul 17 '26 edited Jul 17 '26

It’s probably piston slap 1 cylinder tested 10 on compression and when i ran it on the dyno the knock sensors went crazy

1

u/Haunting-Scratch7872 Jul 17 '26

possible lazy lifter? thats if u need to look further than what hoopty said.

im just rebuilding mine rn. learning everything the hard way

stripped the thread on a brand new melling oil pump this arvo. fkn lovin it. itll be worth it in thge end

full cam ,lifter , springs etc ... hopimg she makes 300rwkw

anyone here fixed their tramping issues? ive beefed everything up except the gearbox

1

u/Alarmed_Package1612 Jul 19 '26

Timing chain slap?