MOT soon - smoking 320d + other faults

[accesspecialist]

Any one got any ideas why my 320d has started smoking dense black/grey smoke when on heavy load?

So far I have replaced the breather.
Cleaned the inlet manifold and bypassed the EGR valve.
I can feel the diffrence its quicker to pick up has more pre boost torque and the top end is more of a kick instead of a steady surge. It still seems to smoke just as much as before.

While I was in the area lost the swirl flaps. Mine showed no sign of damage but why take the risk.

The car is 8 years old with 132000 miles, always serviced with lots of motorway runs up to 520 miles at a time. It was remaped nearly 4 years ago and at the time dynoed at 178bhp. It did puff out the odd bit of smoke back then but nothing compared to now.
I have read that its a sign of turbo wear and would like your opinion/s
Is there anything else that could cause it like a faulty sensor or somthing.

Hope its not expensive as I've also just replaced the rear brakes and need to do the shocks and windscreen for the mot. Can anyone recomend what shocks to buy also.

Thanks in advance
Matt

[johnna]

Worn turbo oil seals cause this.

This is probably one of a few suspects.

[accesspecialist]

OK thanks, I was trying to ignore the oil on the bottom engine cover. are turbos on these are a pig to get at? is it a diy replacement or a specialist?

thanks