Listen to this motor please, what is wrong with it?

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moparfreak77

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This is my 97 Jeep 4.0, 163000 kms. It only does this after it runs for 15 minutes. Pic of rod bearing.

[ame="http://www.youtube.com/watch?v=NxCu4zQ9WxQ&feature=player_embedded"]YouTube- P3311454.AVI[/ame]

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jeep%202.jpg
 
The picture of the bearing is blurry. The crank shows signs of blue which means it has been HOT! And by the click it sounds like a rod bearing knock.
 
Definitely a rod!! I had a Jeep Cherokee with the same issues. The 4.0's are notorious for this! I wouldn't own another!!
 
Mic the crank, and the rod with the bearing, you know in three places and that will tell the story.
 
please explain, I have always heard of a rod knock so what is it? clearances too big so its banging back and forth? Burnt piston? Is the crank screwed?
The full story is this...2 winters ago i parked my jeep with the tail in the air. Hours later i started it with the autostarter (forgetting how it was parked), it ran for about 10 mins when I walked out and shut it off with the remote. I waited a few minutes and it didnt want to start but finally did. Has worked good ever since but I only drive a few miles to work so it never gets too hot. I had a good drive a month ago and this is when I heard the noise for the first time. thanks guys
 

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