98 Gt 4.6l

Hi All
I need some help with my 98 GT. After this car sits for a few days (in garage) it is hard to start. You have to crank on it for a while. Once it starts,it runs fine. It will start fine for the rest of the day. I am guessing a fuel related problem. I changed the fuel filter for starters. Any help will be much appreciated.

I'm no expert.. but I'd say spark plugs/wiring

Anyone care to correct me?

You have to crank on it for a while. Once it starts,it runs fine. It will start fine for the rest of the day.
This sounds like normal behavior for an engine that's been sitting for a couple of days. The oil drains into the oil pan and the fuel drains back into the lines.
Try leaving the ignition switch ON (seatbelt lights, check engine light, annoying beeping, etc.) for a few more seconds to allow the fuel pump to do its job.
Then try turning her over.

I had same issue and so I changed my Fuel pump and spark plugs...!!!! if you changed fuel filter then mybe consider changin sparks!!!
good luck