2JZ engine problems

1992 TOYOTA CROWN
90,000 MILES • 6 CYL • 2WD • AUTOMATIC
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SHARANE
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  • 1 POST
My 2jz engine releases black smoke,and disallows acceleration. What is the cause of this?
Feb 4, 2011 at 1:20 AM
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RASMATAZ
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  • 75,992 POSTS
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
Mar 18, 2011 at 1:55 AM