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1973 ES no start

posted by  142 guy on  Tue Aug 27 16:49 CST 2019
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last visit: Wed Oct 22 20:18 CST 2014
[RELATED]

You are correct that opening and closing the throttle switch with the D jet powered up will cause the injectors to operate. I can't confirm the number of injections that occur; but, I believe it is specified in the D jet trouble shooting manual because opening and then closing the throttle with the system powered up is one of the test procedures set out in the manual. Confirming the number of pulses helps to verify the correct operation of one of the functions of the throttle switch. Also useful for confirming the wiring to the injectors and the throttle switch and that the controller is not completely dead.

The OP was reporting operation of the injectors while cranking. I made the presumption that he wasn't busy opening and closing the throttle at the same time. If he wasn't opening and closing the throttle, then operation of the injectors would confirm that the distributor contacts seem to be operating.






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