306 d-turbo smokey in 2nd and 3rd gear

i have a 97 d turbo with 81k on the clock
as this is my first diesel i havent got a clue whether its normal or
not
i no that oil burners do soot but i have noticed that mine smokes all
the time now in 2nd and 3rd gear and while most of it does look black
in the headlights of rear cars upclose like pulling away from the
lights it looks bluey aswel
also as i dont no anybody personally to compare mine with also when its
coming to boost theres like a hiss noize from 2500rpm to 3000rpm, is
this boost loss
frm a leaking pipe from turbo or simply the the intercooler doing its
job
does it sound normal or could it just be dirty internals that a fuel
additive could help or should i take it to a specialist for them to
have a look?

thanks in addvance

 

Hi
by all the time a presume you mean nomatter how hard you are reving the
engine i have a 205 1.8d that also smokes at the end of the first three gear
changes but some injector cleaning fluid you ad to fuel will do the trick
DONT buy any that boost perfomance you just want one that cleans only, as
for the hiss could be the waste gate

 

is the air filter clean?
do you only see the smoke at night in the headlights? If so this is normal.
some injector cleaner may help.
How loud is the hiss? A little noise form the turbo is normal but a loud
hiss indicates a leak. Do you feel the turbo kick in at 2200rpm?

simon

 

yer feel the turbo kick in like it should. the air filter is quite new
it is only a quiet hiss yes
i cen see it all the time
sometimes more than others.
it dont seem to do it much if not atall in 1st gear