6

So I'm trying to identify what may be the cause of this ticking noise.
I listened to all the LS1 ticking and knocking videos on YouTube but none are similar to mine.

It sort of sounds like when you hold a metal pen between two fingers and you tap it against a metal table. Best way for the to describe it. Maybe the rods or something.

Here is the video

You can hear it best at 0:05 and 0:22. The sound seems to be coming from the backside of the engine (closer to firewall).

It would be great if I could get some thoughts on what it could be, maybe what I can do about it as well.

  • 1
    Can you isolate where the sound is coming from with a stethoscope? How's the oil level? condition? pressure? – Ben Oct 19 '16 at 22:57
  • 1
    That sounds like lifter tick. Does it change with engine speed? – Zaid Oct 20 '16 at 2:56
  • The oil level is good. I dont have a stethoscope. I'll connect obd2 reader to check oil pressure. what values am i looking for on an LS1 ? Regards to change with speed ill rev it when it warms up. – Vincent Vega Oct 20 '16 at 4:27
  • I bought an obd2 reader and it threw a P0300, could a misfire cause a tapping noise like that ? – Vincent Vega Oct 20 '16 at 6:02
  • 2
    the misfire might be because of the tapping noise if theres a loose rocker or a lifter is collapsed. use a long screw driver as a stethoscope if you can't find one locally. – Ben Oct 20 '16 at 12:03
0

I have an LS2 that makes a sound similar to that sound but it was an upper valve tap so i put some Seafoam in the oil before the oil change and now the sound is gone. It also could be the exhaust manifold bolts are broken causing a noise that sounds like an upper valve tap. Speaking form experience it's probably the manifold bolts are broken. Good luck diagnosing the issue. Hope my answer helped.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.