What’s wrong with this piston

[2.9._ranger]

All other pistons have a 2 etched in and this one is a little damaged and it can wiggle back n forth a tiny bit and none of the others can should I be concerned?

 

[Shran]

Did it run OK before you took it apart? How do the cylinder walls look? Post a pic of that if you can...

Looks like the engine ingested something at one point, a piece of metal would be my guess. Probably bounce around in there a while and dinged up the piston. If the cylinder walls look OK, and you have decent compression on that cylinder, don't worry about it.

 

[2.9._ranger]

Did it run OK before you took it apart? How do the cylinder walls look? Post a pic of that if you can...

Looks like the engine ingested something at one point, a piece of metal would be my guess. Probably bounce around in there a while and dinged up the piston. If the cylinder walls look OK, and you have decent compression on that cylinder, don't worry about it.

Cylinder walls look good and it ran good before I just wanted to ask and be sure

 

[Shran]

Not really ideal to find that but it happens. Looks like maybe a little nail or a screw or something, probably got dropped down the intake at some point.

 

[superj]

To be safe, you can get some fine sand paper and smooth those ding ridges so you arent creating hot spots in the combustion chamber.

But, i have had valves hit pistons and damage them way more and the engine ran like a top after the head was reworked and the piston ridges smoothed