Mechanics

2JZ ENGINE PROBLEMS

1992 Toyota Crown • 6 cylinder 2WD Automatic • 90,000 miles

My 2jz engine releases black smoke, and disallows acceleration. What is the cause of this?
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Sharane
February 4, 2011.



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

Rasmataz
Mar 18, 2011.


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