New Engine Time

[sumpter1]

Uh oh, I was the original owner of this Lib which I sold to my daughter about a year ago. It has about 195K on it but it is in great shape.

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[dude1116]

What the heck is that? Sounds like a hell of a knock/misfire. You gettin' codes?

 

[yellocoyote]

Sounds a lot like what mine did when it dropped a valve seat. Had the passenger side head rebuilt and it took care of the issue. No new engine needed on mine. Hopefully yours is the same problem. Much cheaper to repair.

 

[Ry' N Jen]

Get a mechanics stethoscope and start probing areas.
Definitely sounds like a rotational sound.