Black Smoke

[KeithC5]

I have a 2005 1.6 Hdi VTR with 87000 miles on the clock, I have just been informed that I am getting a puff of black smoke occasionally from the exhaust (maybe when changing gear) and so I travelled behind it to verify, these are mainly small but sometimes a decent size. the particulate filter was changed when I bought the car approx 2000 miles ago, I thought this was there to prevent any black smoke at all. It was not being driven hard at all when this happened.

 

Any suggestions please as it is due for it's 1st MOT next month.

 

Thanks

[coastline taxis]

I have a 2005 1.6 Hdi VTR with 87000 miles on the clock, I have just been informed that I am getting a puff of black smoke occasionally from the exhaust (maybe when changing gear) and so I travelled behind it to verify, these are mainly small but sometimes a decent size. the particulate filter was changed when I bought the car approx 2000 miles ago, I thought this was there to prevent any black smoke at all. It was not being driven hard at all when this happened.

 

Any suggestions please as it is due for it's 1st MOT next month.

 

Thanks

You need a Italian tune up

Take the car out for a good hard drive. I normally get mine up to 70 in 3rd gear and keep it there for a couple of mins if you look in your rear view mirror you should see all the built up crap in the exhaust coming away and blowing out as black smoke. Then i normally put a bottle of forte diesel treatment in with a quarter tank of fuel and they pass emissions first time Diesels are work horses and need a good run every now and then to give it a good clear out although with the current price of diesel everybody is driving for economy

[davidad]

Surely there shouldn't be any smoke at all from an hdi with an FAP/particulate filter? An FAP equipped engine in need of an "Italian tune up" will show the "particulate filter clogged" error as all the soot particles are trapped in the filter instead of being blown out of the exhaust. An FAP equipped engine will give a zero reading on the MOT emissions test. It sounds like something may not have been done correctly when the service was done.

[coastline taxis]

Surely there shouldn't be any smoke at all from an hdi with an FAP/particulate filter? An FAP equipped engine in need of an "Italian tune up" will show the "particulate filter clogged" error as all the soot particles are trapped in the filter instead of being blown out of the exhaust. An FAP equipped engine will give a zero reading on the MOT emissions test. It sounds like something may not have been done correctly when the service was done.

check the road tax as its emission related so if its zero emissions then the tax will be coppers.All diesels need a good workout as they are by nature a dirty engine and when just plodding round the doors the exhaust get filled with all the sooty deposited and give out smoke when you rev them. While a fap/particulate filter will catch most of it there will always be some that gets through

[Randombloke]

check the road tax as its emission related so if its zero emissions then the tax will be coppers.All diesels need a good workout as they are by nature a dirty engine and when just plodding round the doors the exhaust get filled with all the sooty deposited and give out smoke when you rev them. While a fap/particulate filter will catch most of it there will always be some that gets through

 

Two issues - the tax is CO2 related - not particulate related.

 

However, the other and main issue here is that coastline is right about taking the engine for a blast.

 

When I got my last BX second hand, there was a service bill that involved an hours hard motorway driving to cure smokiness, and that was from one of the UK's premier Citroen dealers.

 

I would take the advice offered, a good blast, especially if the car can be worked on a long uphill run with full throttle without having to speed. :D

[techbod]

the FAP is just a cleaner filter and it gets clogged ( Ive heard you can clean it yourself driving at 70 mph for a minute or two with no deviation in speed ) it cleans it but does not reset the system