Why do I have black smoke from the exhaust

Tiny
GMANW2K6
  • MEMBER
  • 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 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 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
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  • 12 POSTS
If so will that cause fuel enrichment?
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Tuesday, September 13th, 2011 AT 3:40 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 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
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  • 12 POSTS
That one thing I haven't replace yet
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Tuesday, September 13th, 2011 AT 3:51 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 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
  • MECHANIC
  • 41,815 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
  • 12 POSTS
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
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  • 11 POSTS
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
  • MECHANIC
  • 108,192 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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