I get a lot of white smoke from the exhaust of my Xantia 1.9TD; mainly at start-up and after pulling away after idling for a while. Also, the exhaust is very smelly. I take it that this is un-burnt fuel in the exhaust gases. The car is a high milage taxi (277k miles) , although, I have had this problem since about 175k miles.
I've recently serviced the car using synthetic oil and an expensive oil treatment and a full-tank injector clean , but this does not seem to have had much effect. Given the obvious age of the engine I would expect some problems like this; however, would replacing the diesel fuel injectors be a worthwhile option? Is this a specialist job or one that most good garages can carry-out? Any other observations/suggestions are welcomed! Thanks, Kevin.
1.9TD: Excessive white smoke.
Moderator: RichardW
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ktaylor21662
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Assuming the glowplugs are all working (does it start on all 4 cylinders when cold?) this sounds just like my BX TD did before the injectors were cleaned. Mine were done by a local diesel specialist who charged about the same for doing the whole job as the injectors would have cost had I bought them myself.
I don't think there's much mystery about injetors these days but there are some washers/shields and someone experienced is more likely to get it right.
jeremy
I don't think there's much mystery about injetors these days but there are some washers/shields and someone experienced is more likely to get it right.
jeremy
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RichardW
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What does the exhaust smell of, and has the engine developed a thirst for oil? I suspect that oil seal on the exhaust side of the turbo has failed and you are getting oil vapour out of the exhaust. I can't see it producing unburnt diesel at idle when it's warm with no other symptoms (like running on 3 cylinders only!). Could be the head gasket also if it's using water.
If it turns out to be either the turbo or HG, I'd bin it at the mileage and buy another 100k one - it will probably be cheaper, given Xantia values now[:p]
If it turns out to be either the turbo or HG, I'd bin it at the mileage and buy another 100k one - it will probably be cheaper, given Xantia values now[:p]
White smoke is invariably unburnt fuel. Oil would be blue.
White smoke is also often caused by retarded injection timing. You could try nudging the pump round a little to make the timing more advanced. see if it helps. Mark the pump flange first so you know where you started.
You don't say how well it starts in cold weather. You could also have very poor compression.
White smoke is also often caused by retarded injection timing. You could try nudging the pump round a little to make the timing more advanced. see if it helps. Mark the pump flange first so you know where you started.
You don't say how well it starts in cold weather. You could also have very poor compression.
Brilec -
Engine oil from a defective turbo seal on the exhaust (hot) side will not be burned - as it never reaches the engine combustion chambers. Instead it's thrown directly out the hot exhaust where it evapourates as white smoke.
Engine oil that gets into the combustion chamber for any reason however - is burnt in the combustion cycle producing the wellknown blue smoke.
It does not take much oil to produce rather heavy white smoke this way - could go on for long not exhausting the engine oil.
The white smoke is very easy to test : hold a rag against the exhaust. If the rag becomes greasy (test on a glass surface)- then it's oil. If it simply gets wet - then it's water.
Engine oil from a defective turbo seal on the exhaust (hot) side will not be burned - as it never reaches the engine combustion chambers. Instead it's thrown directly out the hot exhaust where it evapourates as white smoke.
Engine oil that gets into the combustion chamber for any reason however - is burnt in the combustion cycle producing the wellknown blue smoke.
It does not take much oil to produce rather heavy white smoke this way - could go on for long not exhausting the engine oil.
The white smoke is very easy to test : hold a rag against the exhaust. If the rag becomes greasy (test on a glass surface)- then it's oil. If it simply gets wet - then it's water.