Fuel injection questions

Wrencher said

Hello all,
I can't begin to tell you what it even looks like under the hood but they said all the connectors are plugged in where they need to go.

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With respects Esteemed Posters,

Given the above baseline info I think the BASIC mechanical needs to be verified before the Electronics are 'called on the carpet '.

? fuel pressure regulator ? seems there were a few (lol) updates.

pinched return line ? not the first time 'many hands have spoiled the broth '

just My humble $.02