W202 C220 Cdi rough idle, smoke and noisy

[W202Ash]

Hi guys, my w202 c220 Cdi all of a sudden just started smokin whilst I was driving, smokes a little when idle and exhaust emission smells, has now got a rough idle, when I drove it smokes and i think I can now hear a ticking noise from the engine. It's just white smoke.

Any ideas guys, thanks.

 

[carat 3.6]

Leaking injector seal? Can you see diesel or carbon buildup on the top of the engine?

 

[W202Ash]

Ill double check, I've had a leaky seal before, but the smoke is from the exhaust not the engine.