2007 Corolla Verso 2.2 D4-D + Blue Smoke

[Stivino]

There are many threads regarding this question on this site and many others. And I don't think there is a definitive answer on any of them. 

[threepot]

Just to cross over this thread, with roughly the same engine and management system there is a thread on the RAV4 section here that covers some of the common issues:-

 

[ToyotaGang]

How did u fix it?

80% of the D4D owners that have this issue wants to know the fix while that 20% who have solved the issue does not wanna say it or explain it correctly in these kind of forums