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Help smoke problem!

cococola

cococola

New member
Today I have noticed smoke coming out of my exhaust that wasnt noticable before.I replaced my rear silencer this morning with a good condition 2nd hand one(if this makes any difference)If I am stationary it is particulary noticable.It doesnt smell of burning oil from the rear and the oil and water levels are fine.
Any ideas would be much appreciated.
 
What colour smoke. It sounds as if there is some residue in the exhaust that is being burn't off. (oil, water), something that has accumulated whilst the exhaust was lying around waiting for a new owner.. It doesn't sound too serious. Take it for a run to get it fully dried out inside then see what is coming out of it after that.

Cheers,
 
Hi Fred,Funny you say this as I noticed part of the silencer had a damp patch that wasnt there when I picked it up??The smoke is white.
Im just wondering where the damp inside the silencer may have come from[8|]
 
Went for a blast this morning to possibly clear anything that may be in the exhaust and I found that there is no difference other than more smoke.
The smoke is white and there is no coolant loss or oil contamination and the performance is fine.
Any ideas would be much appreciated.
 
How far is 'a blast'? It's still pretty chilly overnight, silly question but it is definitely smoke rather than just condensation coming out of a silencer that's been stored somewhere damp for ages?

If it is burning something then one of the fluid levels will have to drop in the end. Bit of a random thought, but check the brake fluid, it burns white and can get sucked in via the servo..
 
I did an overall run of 11 miles mainly on the motorway sticking to around 80 mph.The smoke gets worse as the car gets hotter,It isnt burning oil more like a condensation but there are no signs of level drops or missrunning of the vehicle.
 
I'm not particularly technical person, but I wouldn't consider 11 miles to be much of a run.

When you say there is more smoke do you mean the output volume is greater or seemingly the same volume continues to be output?
 
When I drive you can hardly see any smoke its when I get to junctions that I get puffs of smoke.Overall since noticing the problem I have done 23 miles in 3 journeys,the last being 11 miles motorway.
 
The fact that it started when you swapped the rear pipe does point to some sort of residue in the new box.

When I first got my car back from the engine rebuild after a turbo failure there was a lot of oil in the exhaust pipe (from the blow up). It was still smoking slightly after the 140 mile trip home
 
It looks like I need to do a longer journey so I have a 130 mile journey to do this weekend which should tell me more.Although I havent had any levels drop I did pressurise the cooling system today and it held its pressure fine.
 
Noticed this morning coming to work I can see some element of smoke whilst driving ,not really bad but I didnt see this until at junctions before.Does this mean that the silencer maybe drying out or are things getting worse[:eek:]?
I still have no drop in any levels and no temp guages rising.
 
I have ecactly the same thing with mine.

I put on a new exhaust and it puffs out white vapour (its not really thick dense smoke as such, more like white whispy vapour like a boiling kettle). I put it down to the fact that it hasn't had a run for over a year whilst it has been laid up. I keep starting it up and running it for a while once every week or so just to keep everything moving (and to warm up the garage!).

Again no fluid loss - all levels remain the same.

Its in for its MOT on Monday so looking forward to giving it a good long blast then. (Hope it doesn't affect the MOT).

 
Thats excactly the same symptoms as mine,so I feel a little happier(I think) I would be intrested if this is going to be a characteristic of the car compared with others[8|]
ORIGINAL: rajagger

I have ecactly the same thing with mine.

I put on a new exhaust and it puffs out white vapour (its not really thick dense smoke as such, more like white whispy vapour like a boiling kettle). I put it down to the fact that it hasn't had a run for over a year whilst it has been laid up. I keep starting it up and running it for a while once every week or so just to keep everything moving (and to warm up the garage!).

Again no fluid loss - all levels remain the same.

Its in for its MOT on Monday so looking forward to giving it a good long blast then. (Hope it doesn't affect the MOT).
Click to expand...
 
The problem with this type of thing is that you tend to get paranoid'
White smoke (steam) is water and providing you are not loosing coolant it aint from the engine. It is probably from the new eahaust as it may have been standing outside and gor very wet. The tempreture in the back of the system is not very high and may well take a time to dry the back box.
As far as the new colour of smoke.... If you look for a problem you WILL find it.
 
If you haven't been using your car (driving about) regularly and have just been starting it up to keep things moving etc there will be a build-up of moisture in the exhaust which will manifest itself as white smoke (steam) when you start using it again.
 
Did 140 miles this weekend and sooooo pleased[:)] there is no smoke at all now...I wasnt getting paranoid really[&:]
 
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