i have a 1997 ford taurus wagon with a duratech dohc. up to a few weeks ago i only had this problem occasionally, now its everyday. every morning she cranks for quite awhile before firing sometimes i have to mash the fuel pedal to the floor crank for awhile shut it off for a second and crank again without the pedal to get it to start, most of the time that works. after the first start of the day it starts fine the rest of the day no matter how long it sits. could be due to weather its been very humid the past few weeks. what should i check for after i replace the plugs. please remember it runs fine after i start it and starts fine the rest of the day . only first thing in the morning. also i had a friend check the diagnostics (mid day running fine) no problems came up on the check.