09 C6 Tapping sound
Thread Starter
Heel & Toe
Joined: May 2024
Posts: 16
Likes: 0
09 C6 Tapping sound
Hey y’all, I have a 09 C6 Z51 and I’m having a tick mainly at idle but also under light acceleration. Oil pressure seems normal and gas mileage is the same as well as no engine light. Has anyone else had this issue?
Last edited by Caden_Bliss; Sep 6, 2024 at 12:39 AM.
Burning Brakes
Joined: May 2014
Posts: 763
Likes: 215
From: Detroit
Sounds like it's in the valvetrain, it ticks at half of idle speed. You might be able to use a stethoscope to narrow it down to a particular cylinder. You can pull the valve cover pretty easily to look for problems, like checking for a loose rocker, but if it's a lifter issue, the head has to come off to address it.
Melting Slicks
Joined: Nov 2011
Posts: 3,183
Likes: 265
From: Virginia
Do you have headers or stock manifolds?
could be an exhaust leak but it sounds just like mine used to which was a valvetrain tick of some sort. Had my lifters swapped and they all looked fine. Could be a worn out rocker trunnion.
could be an exhaust leak but it sounds just like mine used to which was a valvetrain tick of some sort. Had my lifters swapped and they all looked fine. Could be a worn out rocker trunnion.
Thread Starter
Heel & Toe
Joined: May 2024
Posts: 16
Likes: 0
Thread Starter
Heel & Toe
Joined: May 2024
Posts: 16
Likes: 0
Sounds like it's in the valvetrain, it ticks at half of idle speed. You might be able to use a stethoscope to narrow it down to a particular cylinder. You can pull the valve cover pretty easily to look for problems, like checking for a loose rocker, but if it's a lifter issue, the head has to come off to address it.
