Smoke and diesel knock after warm up

Millfed

New Member
Joined
May 30, 2011
Messages
10
Location
Swindon UK
Car
Mercedes E320cdi E350cdi & SLK350 (W211, w212 & R171)
Help.
While cold perfect (about 5mins). Then smoke with loads of soot in it. After further few minutes a diesel knock and missing lumpy drive. Not sure if it's fuel related or head gasket/ cracked block etc.
It's started while driving along. Fine, been driving for an hour or so then loads of smoke suddenly and a very loud knocking noise. But when cold runs without any noise so I assumed it's diesel knock.
Any ideas would great cheers.
 

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