1990 Mitsubishi Mighty Max Q&A

1990 Mitsubishi Mighty Max Question: air sensor

why is the motor running rough and take air sensorout and it runs better -
Answer 1
Air filter stopped up? -
Related Items:
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
how to correct black smoke coming from exahust system