Diesel cylinder wear

Quick look into the Cyl. Of a 2009 Cummins ISC 8.3l engine.

This is a low miles engine, with very high blow-by. After pulling the head we found a couple of issues right away.

Cyl. Walls are polished with no cross-hatch pattern

Vertical scratch in they'll. Wall

Both are an indication of dirt entry in through the intake. I will also post a pic of the root cause.

Just another thought, this cylinder should look like this at about 300,000 miles or so.



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