[SSDan]

If you are talking a cold start - it can vary. The high pressure fuel pump is mechanically driven by a lobe on the camshaft. The engine will turn over without the ecu firing the injectors and the spark plugs until the fuel rails hit the right psi needed by the injectors (something like 2200 psi). So, the longer cranks are there when needed to hit the psi target. Bottom line - normal operation.