Distributor Vacuum Control: Service and Repair

REPLACING VACUUM CONTROL





- Take off protective cap and distributor cap. Unscrew and turn distributor for better accessability.
- Unscrew vacuum control.





- Disconnect pull rod from below.

Installation Note:
- Lubricate eye of pull rod with grease.
- Check that pivoting plate moves easily after connecting the pull rod.
- Complete installation and adjust ignition timing.

Checking:





- Connect BMW service test unit according to operating instructions and perform test step "08 Engine".





- Perform test step "06 Engine",if vacuum hose is connected on the intake air manifold.
- Note difference in ignition timing between disconnected and connected vacuum hose - 13 to 17° before TDC on crankshaft.