1G Engine noise

[blktalon3]

What you guys think? Starts a minute or two after a cold start up. Goes away when warm? Just did a compression check 140-145-150-150. In the video you’ll just hear it end suddenly, goes away in less than a second. I was leaning toward piston slap but idk. The bottom end is stock btw

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[92AWDHX40]

Damn a, loud lifter possibly stuck.

 

[blktalon3]

It’s sounds a little deeper than a lifter in person. But could be possibly.

 

[DSMPT]

Hard to distinguish by the video but is this auto? Could be the flex plate/flex plate bolts is contacting the starter plate or something?

 

[blktalon3]

Yes auto, checked those already

 

[AWD-Tony]

Hard to distinguish by the video but is this auto? Could be the flex plate/flex plate bolts is contacting the starter plate or something?

That does sound like a loose or cracked flexplate. My jeep did the same thing on cold start and went away once it warmed up. My flexplate bolts were loose, common one jeep xj’s

 

[DSMPT]

That does sound like a loose or cracked flexplate. My jeep did the same thing on cold start and went away once it warmed up. My flexplate bolts were loose, common one jeep xj’s

I had the same case on my 2g, too.

 

[blktalon3]

Got a kiggly flex plate so I don’t think that would be it. I’ll recheck the bolts. I’ve numerous checked flex plates and in person this doesn’t sound quite like I remember that sounding

 

[DSMPT]

Just in case, check the oil to look for metal flakes from bearings.

 

[motomattx]

Timing belt tensioner pulley hydraulic dampener possibly, they can make that sound when the arm hits the tensioners piston rod as the cams loosen and tighten the belt during running.