When replacing the fuel tank for any reason on a 2019 BMW Gran Coupe, 5 Series Gran Turismo/ 5-Series sedan, 6-Series convertible or 6-Series coupe, the new replacement tank should be checked prior to installation.
It is possible that the suction jet supply line quick disconnect inside the new tank does not align properly with the fuel pump connection. If this detail is not checked, the engine will not start.
Do not re-route the suction jet supply line to make the connection. Hold the suction jet supply line with one hand and rotate the quick disconnect elbow with your other hand to align the connections. Connect and inspect the line for kinks before continuing.