Car Won't start on 1997 Jaguar XK8

I have been struggling with a no staret problem on my car. I used NOID lamps to check the FI, checked the spark, and checked fuel pressure when cranking. I saw 42psi but the lamps only show the injectors firing once and I show an engine fault. It starts with starter fluid momentarily so I think it is a fuel system issue. How likely is it that the fuel filter/pump are running but not producing steady pressure ?

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1 answer
First make sure your air filter and all the components are connected to the throttle body.