2JZ ENGINE PROBLEMS

  • Tiny
  • Sharane
  • 1992 Toyota Crown
  • 6 CYL
  • 2WD
  • automatic
  • 90,000 miles

My 2jz engine releases black smoke, and disallows acceleration. What is the cause of this?

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Friday, February 4th, 2011 AT 1:20 AM

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  • Tiny
  • rasmataz
  • Member

Probable causes of an engine running rich are as follows:

1. Excessive fuel pressure can be cause by restricted fuel return line
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
6. Map sensor
7. Plugged cat convertors

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Friday, March 18th, 2011 AT 1:55 AM

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