I will admit I am a novice on car repair.
I learned a very valuable lesson regarding installing or generally mucking around with the mechanical fuel pump in my 87 Fifth Avenue.
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Put a wrench on the connector shown by the red arrow if you plan on mucking with the fuel lines.
I did not.
My non-start, fuel issue is entirely my own fault.
Because I did not use a wrench on the connector and removed/reattached lines to ensure I didn't have things cross threaded or...
Fuel Pump Lesson Learned