Black smoke means the air/fuel mixture is too rich. Try checking the fuel pressure regulator for leaks by disconnecting the vacuum line while the engine is running this could be the potential cause. Also check the spark plugs and replace them, they are probably fouled.
Answers & Comments
Black smoke means the air/fuel mixture is too rich. Try checking the fuel pressure regulator for leaks by disconnecting the vacuum line while the engine is running this could be the potential cause. Also check the spark plugs and replace them, they are probably fouled.