Robjw

Focus 1.8 Tdci Gray Smoke And Hissing Sound From Engine On Hard Acceloration

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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

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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.

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

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