fuel & thick smoke emmision!

1999 LAND ROVER FREELANDER
170,000 MILES • 6 CYL • 4WD • AUTOMATIC
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XGATETECHNOLOGIES
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please, advise me on what next to do about my Landrover "Freelander" V6, 1999 model.

i took it to the mechanic's workshop to stop some oil leaks from my engine, he had to change my cam shaft oil seals,after which he also changed my airflow meter.

now upon taking back my car, i noticed that the engine is not steaming well, it emits drops of Fuel and a thick white smoke while driving!

Please, what could be the cause and solution to this situation.
Apr 7, 2011 at 9:58 PM
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RASMATAZ
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Could be running too rich due to the following

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.
Apr 7, 2011 at 10:03 PM