MY406 smokes

Hi I have recently bought a 1998 Peugeot 406 diesel that has done 150k
it has a good service record but the problem is that it kicks out a
grey ish colour smoke when I accelerate don't look so bad during the
day but at night it embarrassing,She drives fine and doesn't use any
oil or loose any water.the smoke smells of diesel. I've put some
injector cleaner in the tank and also some stuff called stop smoke in
with the oil. Can you make any suggestions at to what the problem could
be? Respects Gregg

 

Try changing the oil and air filter these will usually improve things.
It is also worth giving the engine a good burn in second gear at 4000 RPM as
this will clear all the crap out of the exhaust system as it becomes hot.
Mike

 

Hi Mike
thanks for the info but have tryed that and sadley no joy.it seams to
be at low revs.could it be injectors and I bet they cost a bomb knowing
my luck
respects gregg

 

Try and ring pug spares or go to the web site.and get a price for new
injectors.

 

Could be a number of things causing it to smoke,
Oil and filter are just one, injectors are another , fuel contamination,?
air filter,? valve stem oil seals,? worn rings,? to much oil in the sump,
these are a few causes,
I would find a diesel specialist in your area and ask his advice,,, could
save you a lot of time and money,,
I sometimes get advice from my local bus depot mechanics....they are usually
spot on... !!!!!
Fitzy

 

Hi Fitzy
Thanks for your advice. I had a local garage look at it a few weeks ago
and they told me that the engine was good as in starts fine and
wasn't using oil, So they thought that possibly at some point
someone had put to much oil in and that its burning it off. As the car
only smokes when under load and when hot. The only thing that concerns
me is that the smoke smells of diesel not oil. I've done a few miles
now and I love the car to bit's but she still smokes. Ps Do all these
cars sound like a bag of nails shaken in a tin can when cold!
Respects Gregg

 

As you have changed oil and filter did you change air filter? If not that
would be worth trying. The garage was correct if it starts and does not
misfire at idle everything is more or less OK. The other possibilities are -
tight valve clearance - pump timing - this is sometimes adjusted to increase
performance but it also increases smoke possibly wear to injectors. If you
decide to change injectors use a local diesel specialist for replacements -
never buy new injectors they are unnecessary. Always use service exchange
from a specialist - not knowing where you are if in Greater London use
Watson's Diesels in West London.
You mentioned smoke looks worse at night this is a bit of an optical
illusion it is no worse just that car headlamps show the particles better at
night

PhilC

 

Hi Phil
Yeah I'm going to try injectors as have changed all filters and oil,
and tried all the cleaning/stop smoke etc jollop's that's on the
market. I have found a company on the internet that do a recon set for
£130 does that sound about rite.
Respects Gregg

 

I totally agree,
Fitzy

 

Re, con injectors £130 sounds about right, (40 quid) each up north,
but as Phil has mentioned,,, have the valve clearances checked and adjusted
first,
this is a well known problem with some Peugeot's,
could even be the cure your looking for,
Fitzy


Sounds
Hi Phil
Yeah I'm going to try injectors as have changed all filters and oil,
and tried all the cleaning/stop smoke etc jollop's that's on the
market. I have found a company on the internet that do a recon set for
£130 does that sound about rite.
Respects Gregg

 

My old P reg 1900 TD 406 always looked smoky out the back at night.
It did a reasonable mpg and passed emission tests so it didn't bother me
(much).
I wondered if there was something about the red rear lights showing it up
more as it was invisible in daylight.
Have you tried just dipping the rear view mirror ;-)

jim.

 

Hi Jim
Unfortunally I'm old school and tend to be a bit conscientious,But I
have noticed that the car miss fires at low rev's so I think the next
job is injectors. man it's just driving me up the wall
respects gregg
Ps anyone in the surrey area (esher) wanna come n change em for me!

 

are they the same as a pug 405 lay out? i am in Addlestone and if you
like i give you a hand to do the job?

 

Hi I've really no idea if there the same lay out but will try and find
out and thanks for your offer
respects gregg

 

I have tryed and look on web sites but no joy.but i can help you if you
need help. can help you this week end (sunday)

 

Hi Gregg

Only just caught up as it happens I live near Woking - just up the road -
and have the socket for changing the injectors. More than happy to help
...........

As you have mentioned a misfire I am almost certain you have a tight valve -
if you want to try another set of injectors I have a spare good set but you
will need to get washers - run out.
The email address is good if you want to contact me

Phil

 

JUST NOTICED THAT THERE IS A LITTLE PIPE (PART NUMBER PA6.6/GF30) THAT
HAS BROKE AWAY
FROM WHAT LOOKS LIKE A PLASTIC VALVE SITTING TO THE RITE HAND REAR OF
THE CYLINDER HEAD.and then has another pipe that runs to the brake
servo
ANYONE KNOW WHAT THIS THING DOES?
........................................................................

 

i think your find it puts air into your servo.which helps with your
brakes.so you dont have to stand on the pedal.
chris Addlestone