Hi Friends 1987 300 SDL I turn the Key Off And the Car does not Shut Off. I check the Vacuum Hose that goes to the Injection Pump and the Vacuum Reads 25" of Vacuum. I see the Car trying to go off but it is Impossible. So I open the hood and Stop the car pushing the IP lever. I believe could be the Shut off Valve on the Injection Pump and I want to confirm that this is the Right Vacuum or should be More suction. Thanks for yours responses. FErnando Q