jvog

Did you ever hear the video of mine?

JC316

No, I didn't.

jvog

Heres the thread with the vid

JC316

Where? No linky. BTW, by autopsy of the old engine, I found the problem with the new one. Two bad lash adjusters in the old one, which caused the exact same noise. Now I just have to pull the valve cover on mine and change it out.

jvog

oops forgot the link lol....https://mustangforums.com/forum/4-6-...hat-sound.html

JC316

Sounds like a timing chaing rattle. Did you replace the tensioners when you rebuilt the motor?

JC316

Sounds like timing chain rattle to me. That or an exhaust leak. Were the tensioners replaced on the timing system? You wont always hear it at idle.

jvog

Nope. I don't hear anything coming from the timing cover though.

JC316

Hmm. Then I say it's a lash adjuster. It sounds very much like mine when it revs up. I have pulled the valve cover on mine and I will see if I find it. When I do, I will post back here.

Hangwire

Dude I really cant hear ****, even in the intervals you provided. The only odd thing I hear is the "deep pulsating sound" that sxy described. The only thing a noise like that can mean is lack of compression in one or more cylinders or an exhaust leak. However I have a feeling its the camera giving that noise more than anything.