Delayed Start

[JD1964]

I had a friend who has a Snap On diagnostic tool do a full scan. Everything came up clean.

 

[KENS89LX]

I know when I had fuel pressure adjusted to high it would have the same symptoms you have. If you hold the throttle while cranking it started sooner.

 

[91TwighlightGT]

Fuel filter issue could cause low fuel pressure at the rail which could lead to hard start. You usually also have drivability concerns with it as well, though.