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grey smoke

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Hi some background first,I have replaced my DPF, fuel vapour valve system and pressure sensor.  Now when the car is running hot I am getting grey smoke when accelerating hard in 2nd 3rd 4th and 5th gears.  Just started recently never had problem previously,  could it be EGR? or possibly inter cooler pipe split?  Any help appreciated.

I drive a 2010 mk4 mondeo 163bhp/120kw 108000 miles



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