BMW 7 Series: General

 Check BMW Diagnosis System For Excess Pressure And Vacuum (N63)

IMPORTANT: Excess pressure and vacuum lines are identified by the size of the connection fittings and color-coded red and blue and must not be mixed up with each other. Build up pressure with Blue color. Generate vacuum pressure with Red color. Mixing up the functions will result in damage to th

 Replacing Both Timing Chains (N63)

Notes WARNING: Burning hazard! Wear gloves. Necessary preliminary work Remove lower TIMING CASE COVER To facilitate removal and installation of timing chains, turn engine over with special tool 00 2 300. Timing drive, cylinders 1 to 4 Remove guide rail (5) from bearing bolt. Remove timing cha