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Discussion Starter #1
t5 1.9 started spluttering abit on motorway at about 60mph yesterday . today every thing sounds ok no horrible noises but when you drive and accelarate big black cloud out the back not oil smoke ! not down on power . only way to described it looks like the smoke you see from a race truck . what should i check 1st ?
 

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As RogerP1952 says,
Which may well point towards either the EGR valve or turbo, more likely the EGR valve sticking open when it should be shut.
 
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