Mechanics

BLACK SMOKE COMES OUT OF THE EXHAUST PIPE CAR DOES NOT RUN OK

1989 Volvo 780 • 1 miles

My car does not accelarate properly, and when I press the gas black smoke comes out of the exhust pipe.
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Nabilalmasri
November 20, 2011.




Its running too rich could be caused by one of 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.
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Tiny
Rasmataz
Nov 20, 2011.
Hell this is nabil. Can you please tell me how the coolant temp sensor is calibrated on this volvo since it maight be the issue this problem accured after I replaced the water pump.

Tiny
Nabilalmasri
Nov 21, 2011.
Check the sensor's resistances Hot and Cold if its not within specs-replace it

Tiny
Rasmataz
Nov 21, 2011.

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