Leaking injector = no clean on this Mercedes E320 CDI (2008 – 128,696 miles)
โ ๏ธ Black smoke and poor MPG? Carbon buildup is just one cause, but boost or injector leaks amongst other issues can also cause it. ๐ Here we have a Mercedes E320 CDI (2008 – 128,696 miles) booked in for diagnostic consultation and Engine Carbon Clean after the owner had noticed