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So I’ve been trying to start this truck, and apparently its a fuel delivery problem, it only starts when i spray fuel through the intake, fuel pressure is good, high pressure pump good, I checked the injectors and im getting pulse apparently, but theres two injectors that are getting weird spikes in my labscope, injector number 4 is getting around 200 volts and the other one arround 100. The other two are fine, they were around 60. Somebody help me!! Also that picture of the labscope, The red one is the injector number 4
Would you be able to get a capture with current for all four injectors and one control wire? Put one wire for each of the injectors in the jaws of the amp probe. I think the injector current is going to tell you more about the injector circuits than the voltage will at this point.
Even so, I still have a hard time believing there's a problem with all four injectors. It should still try to start even if one or two are dead. What were your high and low side pressure readings? Have you taken a fuel sample?