vz smoke

[luggy]

My vz Calais when I put my foot down blows black smoke out anyone got ideas??

[MorganVZ]

Oil leak or head gasket from what i've heard could cause it, dont know how accurate that is

[Low06VZ]

Black smoke generally indicates unburnt fuel. I would possibly suggest that either an oxygen sensor or the maf could be dirty/faulty and when you boot it the computer cant compensate quick enough, therefore flooding the engine with fuel and causing black smoke

[Adds_05]

i always thought when it came to smoke out the exhaust
white = condensation/water etc
blue = oil burning
black = fuel
so id probably agree with the above post

[RiCeY]

Plug a scan tool in and check fuel trims.

[luggy]

Cheers guys I'll go get it checked with the sensors