I picked up a 99 e300 "parts" car I'm having second thoughts on using for parts. it has 428k and a dead misfire on the 5th cylinder. I can hear compression leaking from the injector hole it's a distinct tiss tiss. it ran fine, started missing and some shop said it had a bad IP.

I've not jumped into it yet, but I was curious if these engines were sleeved or not. if the cylinder is completely dead I'd throw a piston in it and a sleeve amd call it a day

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k