Question about 2000 Ford Focus

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Power loss and black smoke?

I have a ford focus tdci on a 2003 (53). i am having power loss when car is cold, with loads of black smoke feels as if the turbo isnt working. when car is warm all this stops and the car runs fine. is it my turbo or injectors help!!! i thought it was the air flow meter but its fine.i had a friend diagnose the car with no fault codes. also sometimes even when car is warm i have this problem with power loss and black smoke. also its only seams to happen in 1st and 2nd gear, after which turbo works fine and smoke stops coming out.

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  • farhan zafar Jun 19, 2009

    thank you my friend, thats helped me loads. i've just taken it to my garage and my whole system needs cleaning an it might be a sensor. thanks again

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I had a similar issue to this after I got in a VERY small fender bender (literally) in an 87 Turbo Supra. In my case, my pasenger fender got pushed in JUST enough to crack a charge pipe and cause a boost leak.

Basically, what was happening was the turbo would spool and build boost, the mass fair flow sensor would read all this air coming in and tell the ECU to dial up the the appropriate amount of fuel. When the air reached the cracks in the charge pipe, it would escape out of them. Thus there was a much lower air-to-fuel ratio, causing less fuel to combust, which lead to power loss and black smoke out of the exhaust.

My guess is either an oxygen sensor, or more likely a boost leak.

Good luck mate.

Posted on Jun 19, 2009

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