Why do I have black smoke from the exhaust

1995 TOYOTA COROLLA
11,300 MILES
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GMANW2K6
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I have a 1995 Toyota Corolla 1.6 motor and I have black smoke coming out of the exhaust. This is what I've done to provent this from happening. I replace Map Sensor, Air Charge Sensor, O2 Sensor, Catalytic Converter, Coolant Temperature Sensor, Temperature Switch, T.P.S. Sensor, Fuel Injectors, Fuel Filter, and a full tune-up. After all those replacements is there anything else that I may have miss?
Sep 13, 2011 at 2:59 AM
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JACOBANDNICKOLAS
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You hit it all. Are you sure it isn't burning oil?
Sep 13, 2011 at 3:02 AM
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GMANW2K6
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If so will that cause fuel enrichment?
Sep 13, 2011 at 3:40 AM
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JACOBANDNICKOLAS
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No, it wouldn't. Have you made sure the fuel pressure regulator is working properly?
Sep 13, 2011 at 3:42 AM
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GMANW2K6
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That one thing I haven't replace yet
Sep 13, 2011 at 3:51 AM
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MHPAUTOS
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Do a fuel rail pressure test and check for a leaking injector,
Sep 13, 2011 at 12:23 PM
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KHLOW2008
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The last thing to check would be the ECM.
Sep 13, 2011 at 2:21 PM
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GMANW2K6
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Will the wrong ecm cause fuel enrichment? Because I have a 1.8 ecm that is running a 1.6 motor
Oct 2, 2011 at 6:47 AM
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SAHILWALIA
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Well the reason of black smoke is incomplete combustion.since u have removed all your engine parts i suggest you to check out the pistons as well.
Oct 2, 2011 at 7:29 AM
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JACOBANDNICKOLAS
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If you have a different ECM, that can cause the problem. It could be causing the different air /fuel ratio. Thus, a rich fuel mixture.
Oct 2, 2011 at 8:06 PM