Hi all
Got the above vehicle in at the moment from another garage who have replaced the headgasket because the engine kept overheating,

The car idle badly and has really bad White smoke (overfuelling) first thing I checked was egr and wastegate solenoid pipeworks as I have seen people put them on wrong but they are all ok.

After this I checked the timing which is also ok so after this I thought I would start with the basics and first thing that came to me was blocked exhaust. I removed the pipe from the egr cooler to the valve and it revved up nicely (although chucking out lots of smoke).

Then I unbolted exhaust from the turbo so the whole exhaust was disconnected and to my amasment it wouldn't rev again.

I feel that the turbo is causing the fault as I have blanked off the egr valve and with disconnected vac pipe to wastegate it still does the same thing. Also if I take the boost pipe off the turbo is boosting hard onto my hand just at idle.

As I have never come across this fault with a turbo before just wondered if any of you guys have seen it or have any other tests I could carry out.

Regards
Carl