95FbFormula

iTrader: (25)

This was on my cylinder wall when I took my heads off this is cylinder 7 also had an exhaust manifold leak on this cylinder it did have a puddle of oil in it but it was on a stand upside down so it could have been from that I can not feel it but it is definitely there and wont come off.

http://i30.tinypic.com/2r4itqo.jpg

salemetro

iTrader: (5)

Just guessing here, but it looks like water damage. The question is : How?

A little more history on the engine/car might be helpful.

95FbFormula

iTrader: (25)

Motor is an 03 Lq4 Cam out of a 2500 truck There were no signs of water in the oil when i drained it all of the other internals look fine and head gaskets looked good. I cant feel it at all on the cylinder wall i am tempted to just run it but I do not want it to cause problems with detonation.

00pooterSS

iTrader: (40)

Maybe you should clean it and post another pic, that would help alot. All I can really see is a oily cylinder.

Mike@ZMS

iTrader: (10)

does your motor have piston slap? If so, most engines that have some good slapping going on, usually show those odd wear patterns.