Ford Service Bulletin said to reprogram PCM for this year, model and this was done at dealer, but no improvement to long crank time. No error codes. Crank duration improves (1-4 seconds) when: 1) car has been running, turned off, and restarted within 5-10 min; 2) on cold start, if I turn key to ON, wait for fuel pump to cycle on/off, then turn key off and on again and immediately crank it over. Starting does sputter a bit but engine runs smooth within seconds.
Have tested fuel pump pressure and this seems to be o.k., fuel filter changed, new plugs, seemingly good spark; runs just fine once started. What to check out next?