Timing chain making noise when starting?

2007 AUDI Q7
246,275 MILES • 3.6L • V6 • AUTOMATIC
Avatar
DEZ66
  • MEMBER
  • 2 POSTS
The timing chain was completed in January 2023. Slowly over the last month-2 months I’ve started hearing rattling and now it’s getting worse. You can hear chain slapping on start-up, but the check engine light isn’t on. Oil is good and I haven’t seen any metal in it. I want another opinion as I say it’s timing chain but everyone else is saying it doesn’t sound like it.
May 3, 2023 at 11:51 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

It could be the chain. There could be a failing tensioner. The best thing to do is purchase an automotive stethoscope and place it on the timing chain cover to see if that is where the sound is coming from.

Also, if it is loud enough, record it and upload it for me to hear. I may be able to recognize it.
When they replaced the chain, were any other components replaced at the same time? I attached an exploded view of the timing chain and components. Take a look.

Let me know.

take care,

Joe
Image (Click to enlarge)
Attached Media
May 4, 2023 at 8:24 PM
Avatar
DEZ66
  • MEMBER
  • 2 POSTS
This is one video just from last night it been progressively worsening through the week.
Video (Click to enlarge)
Attached Media
May 4, 2023 at 8:26 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

I listened to the video and was unable to hear anything. By chance, could you have a helper start it while you record from under the hood?

Let me know.

Joe
May 5, 2023 at 9:55 PM