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Location:
Melbourne
Registered:
January 2003
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Re: smallport 4AGE not starting after conversion.
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Sun, 27 February 2005 09:51
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"we measured the injector output with a CRO, and there is a waveform present, but not sure what it is supposed to look like."
I think a Cathode Ray Oscilliscope is getting a bit carried away ? If you check the wiring diagrams you will see how it works , mostly if it doesn't open the injectors the ecu isn't getting the start signal , or the ignitor signal . This is really dependent on what ecu , loom , engine etc we are talking about here . From memory the injectors are controlled by a negative signal from the ecu {easy to test}, so there should be a constant positive power to them . With no water , the only thing that will happen is the cold start injector will stay operating . A test light will tell you what is happening easily 
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