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Discussion Starter #1
hi guys im new to this forum just need a bit of your help and knowledge i have 54 plate 320d with 83k on the clock which im having problems on cold start the Symptoms are:

1)rev idle going up and down 1 to 750
2)white/grey smoke coming out
3)poor mpg 35-37
4)sometimes when you pull hard it will cut out just for 1 sec then fine again
5)in 4th gear low rev put you foot down smoke pooring out

I'm pretty sure it's not turbo failure, as occasionally the car will pull strongly.

i have also got it remapped a few months back ago and just got it serviced a week ago all filters and breather valve was changed
any ideas?
thanks in advance cheers
 

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grey smoke would indicate overfuelling...which point 3 supports
does the idle fluctuate to the same extent when the car is good n hot?
has the egr valve ever been cleaned out?
try the search terms egr and vortex filter ;)
 

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Discussion Starter #3
when the car is hot it wont idle i have changed voltex filter just week ago the egr valve i haven't touch that since i have brought the car thanks for the help so far
 

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How long have you had the car? Has it just started to do thus in the cold weather? Do the symptoms described go when the engine gets warm?
 

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Discussion Starter #6
i had the car since may about 6 months and once the engine is warm idle is gone smoke is there when you floor it from low revs.

and remap when done locally in northamptonshire you sure i dont need a new maf sensor? ill try maf disconnected
 

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Discussion Starter #7
sorry missed one thing one out yes these problems started when the cold weather came but when i got the remap done the idle wasnt there or start up smoke just only when you floor it the white/grey smoke happen could it be the remap?
 

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Discussion Starter #9
there was no error codes
 

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Discussion Starter #11
yeh got it all sorted it was the egr valve which was cloged up but i just bypassed the egr and put redex diesel treatment in two tanks full. the smoke stopped and mpg went up by 2 and no idle at start up
 
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