Originally Posted by scia63

Hi: My '72 450SL does not have a retard solenoid, it has a 2 way valve.

Where would I find the information you posted?


Your explanation is in reverse of how my retard works.

My retard is canceled when the 2 way valve is energized.

The system you describe has constant power and cancels the retard when the power is turned off.

My retard timing is canceled, and timing advances when the AC is turned on.
So, if my ignition retard is not connected there would be no issue in the car stalling when the AC is on because the ignition advance would already be present.


Thanks