running rich (black smoke) on 1990 Mitsubishi Mighty Max

1990 Mitsubishi Mighty max 4 cyl, What would be the first sensor to check? Already replaced water temp sensor. Same amount of black smoke from cold to running temp. Thanks..B

by in Graniteville, SC on December 03, 2010
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1 answer
ANSWER by , August 06, 2014
mass air flow sensor