WHY DO I HAVE BLACK SMOKE FROM THE EXHAUST

  • Tiny
  • gmanw2k6
  • 1995 Toyota Corolla
  • 11,300 miles

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?

Tuesday, September 13th, 2011 AT 2:59 AM

9 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,305 posts

You hit it all. Are you sure it isn't burning oil?

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Tuesday, September 13th, 2011 AT 3:02 AM
  • Tiny
  • gmanw2k6
  • Member

If so will that cause fuel enrichment?

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Tuesday, September 13th, 2011 AT 3:40 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,305 posts

No, it wouldn't. Have you made sure the fuel pressure regulator is working properly?

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Tuesday, September 13th, 2011 AT 3:42 AM
  • Tiny
  • gmanw2k6
  • Member

That one thing I haven't replace yet

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Tuesday, September 13th, 2011 AT 3:51 AM
  • Tiny
  • mhpautos
  • Expert
  • 29,842 posts

Do a fuel rail pressure test and check for a leaking injector.

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Tuesday, September 13th, 2011 AT 12:23 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,938 posts

The last thing to check would be the ECM.

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Tuesday, September 13th, 2011 AT 2:21 PM
  • Tiny
  • gmanw2k6
  • Member

Will the wrong ecm cause fuel enrichment? Because I have a 1.8 ecm that is running a 1.6 motor

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Sunday, October 2nd, 2011 AT 6:47 AM
  • Tiny
  • Sahilwalia
  • Member

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.

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Sunday, October 2nd, 2011 AT 7:29 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,305 posts

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.

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Sunday, October 2nd, 2011 AT 8:06 PM

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