1998 Volkswagen Golf

Engine Performance problem
1998 Volkswagen Golf 4 cyl Front Wheel Drive Manual

What do l do to prevent black smoke coming out of my exaust pipe
Kofi Addo
October 14, 2009.

Black smoke means your air/fuel mixture is too rich could be one of the following: Possibilities here could be a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.

Oct 14, 2009.