Hi guys,

This is my first post, I have a Mondeo 20. tdci zetec hatch with 160k on the clock, it has been an absolute legend of a car requiring very little major work, just routine servicing and an alternator.

Recently I have noticed that it has started emitting plumes of black/blue smoke - not entirely sure but def not white! from the exhaust at the boost phase of the turbo. Its also way way down on power, I did notice when driving down a country lane with the windows open a rather loud whooshing noise if you floor it in third or fourth gear - ie less engine noise higher up the gears. sounds like a load of air is escaping - could this be linked to lack of performance?

Accompanying this fault, when you eventually get cat up to 60/70 on the mway as long as you have foot on the throttle its fine. When you lift off its lumpy and jumpy - hesitant, not at all right.

Can anybody help me to diagnose the possible fault based on these symptoms? I am quite handy and can turn my hand to most jobs that need doing - I begrudge giving my hard earned to a garage, when I could do the job myself

Thanks in anticipation for anybody's help - I love this car and really hope that its repair is possible/economical.

Cheers