BMW 7 Series: Emission Control, Oxygen Sensor

 Removing And Replacing The Catalytic Converter Cylinder 1-4 (N63)

WARNING: Risk of burning! Only perform this repair work on an engine that has cooled down. Necessary preliminary work Remove ACOUSTIC COVER. REMOVE BOTH INTAKE SILENCER HOUSINGS. Remove EXHAUST SYSTEM. Remove both control sensors. Remove both monitoring sensors. Picture shows the left side,

 Checking Camshaft Timing On Right Side (N63)

Notes IMPORTANT: The timing can only be checked with special tool 11 9 900. The timing may be misinterpreted if it is checked without special tool 11 9 900. Cylinders 1-4: Necessary preliminary work Remove right CYLINDER HEAD COVER Remove FAN COWL with electric fan Remove BELT PULLEY for air co