wont start on 1990 Mercedes-Benz 300SEL

won't start but there is power from the sparkplug. The fuel pump is working but no gas coming from in the injector. There is no power from Bosch K electronic mechanical fuel injection

Asked by for the 1990 Mercedes-Benz 300SEL
Is there a relay that controls the power to the injectors? Or is the power straight from the ECU?
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