Truck emits too much smoke

2000 CHEVROLET S-10
200,000 MILES • 2.2L • 4 CYL • RWD • MANUAL
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EDGAR ARMENTA
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the problem I having is that it spits out a lot of smoke through the exhaust. I changed the O2 sensors, the two of them and it still emits a lot of smoke out of the exhaust. black smoke to be specific, and it wastes more fuel than normal.
Nov 11, 2016 at 6:12 PM
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SATURNTECH9
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Have you checked for codes in the computer yet?
Nov 11, 2016 at 8:50 PM
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SATURNTECH9
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Also, have you checked the coolant temperature sensor yet?
Nov 11, 2016 at 8:50 PM
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EDGAR ARMENTA
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Only code appearing is the p0171 indicating that the fuel system is too lean (Bank 1), the temperature goes up to 180, no higher. coolant temperature sensor does not appear on the list of codes either.
Nov 12, 2016 at 9:27 AM
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SATURNTECH9
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A bad coolant temperature sensor a lot times does not set a code .The code is most likely a vacuum leak somewhere.
Nov 12, 2016 at 12:01 PM