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I have a 92 ford f250 with the 5.8l. This started as no fuel pressure at the rail but have great pressure at the pump and after the fuel filter. Replaced fuel pressure regulator. This fixed the no pressure at rail problem. Now have 42 psi at rail. Still not starting. If i use starting fluid she starts up. Checked injector and it has power and is pulsing. Haven't worked on many of these so no sure what to check now. Also pump is not priming. It just keeps running. I'm pretty sure its going to be a bad pcm but how can i test it before replacing? Thanks in advance for your help.
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