Sagitar, 1.4t black water drainage. Please answer the friends you know. It is normal to go to 4 S.

If the black water discharged from the exhaust pipe is normal.

Generally, the tail gas contains carbide, which is due to insufficient combustion and contacts with moisture in the tail gas to form so-called black water.

Solution: Dolara Expressway, clean the throttle, or occasionally add some gasoline additives (not recommended).