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Running rich (black smoke)

(1990 Mitsubishi Mighty Max)
in Graniteville, SC on December 03, 2010
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
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Popular Answer
on August 06, 2014
mass air flow sensor
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