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Full Version: Focus 1.8 Tdci Gray Smoke And Hissing Sound From Engine On Hard Acceloration
Ford Owners Club - Ford Forums > Ford Models > Ford Focus Club

Hi All

Have noticed on my Focus that when accelorating im getting a loud hiissing / blowing sound from engine and also gray smoke from exhaust, there are no performance or starting issues. Any ideas

Grey smoke is caused by brake fluid. It generally means that your brake master cylinder is bad, and is getting sucked through the vacuum brake hose.

Check for split pipes , would be my first thing on my list

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