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Black smoke

1. Mixture too rich. Fuel pressure to carburetor too high. See "engine quits on landing or with throttle off" for description of problem.

A too rich mixture also causes dry soot on the exhaust pipe.

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Disclaimer: sacskyranch.com contains abundant information relating to aircraft maintenance. The information provided is not intended to supercede or supplement the F.A.A. approved maintenance and/or operator’s manuals. Those F.A.A. approved manuals must be utilized when performing maintenance and/or operating aircraft.