Hi guys. Bit of help please. Have a 2009 is220d. 147k miles. For some reason it keep blowing thick white smoke before heating up from the exhaust. For around a minute or two then goes away. However now it won't just do it before heating up but after it heats too. The smoke also smells pretty bad too. It's just recently been fully serviced and also had a new egr valve.
Any help much appreciated. Thanks