1973 MB 450SL Throttle Switch- Should Injectors Fire?

Hi Norbert,

I am confused. Dwell is the angle (with 360° meaning a full turn) where the ignition contact is closed. In ignition contact we will find that repeatedly by no. of cylinders during one full trun of distributor. And it is the same meaning on trigger contacts.You can either measure dwell for 1 cyl. engines or measuring closing angle of rotation.

Hi,
in the meantime I talked to Volker and by fortune received a very fine printout of the oscilloscope readings.
One can see opening and closing time are really not the same lenght, Volker is right.

Closing angle is about 140°, not 180°.

Regards
Norbert