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2003 CC 3500 4x4 DRW
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Discussion Starter · #1 ·
I don't know what I am supposed to be looking for but I thought these looked pretty clean for the miles, cross hatch is very prevalent. Number 4 has a bit more carbon than the others but that was the bad injector cylinder that provoked the swap of all six. What do y'all think?
 

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Just from the pictures, the cylinders still have cross-hatch and I don't see any grooves. Looks good. As far as pistons, I'm assuming that's carbon build-up and not early melting? #2 and #4. (y)
 
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I'd love to know how to remove some of that carbon to see if it is, just to differentiate.
 
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I'd love to know how to remove some of that carbon to see if it is, just to differentiate.
I suppose you could pull the head and get at it! :LOL: But hell, at that point might as well just change em' out and throw some rods in. An inframe if ya will. I know curiosity would be killing me for sure.
 

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I promise I'm not that curious at this point. Had a borescope at work and while doing the studs/valve springs decided to take a peek and was happy with what I saw.
 
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Lower carbon footprint than new junk
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Yeah looks carbon built up just on the piston and mirroring off in the wall. Everything looks good.
 

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My truck has 272k been tuned for a while now. Runs like a top. No blow by. Original injectors. I wouldn’t sweat it. A lot of people on here make you worried for no reason. Run it
 

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Fuel additives will break up that carbon and so will heavy towing.
 
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What would clean that up? At International when a rocker bridge would fall off due to sticking valve(carbon). We would take the cold start ignitor off and run a cleaner at high idle with the down pipe removed so the dog wouldn’t clog.
 

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Lower carbon footprint than new junk
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I wouldn't even worry about it. Most engines will look like that with enough miles. It's not going affect anything like carbon on a moving part in the valvetrain.
 
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