Car runs very well with smooth idle even when stuck in traffic and temperatures go up. If restarted withing a few minutes of stopping engine starts immediately and idles smooth. If allowed to sit ten minutes or longer but not all the way to cold then starting is a problem. Engine hits a lick when first cranked but then stops firing even if cranking for 15 to 20 seconds. Wait two minutes or so, start cranking and in about 5 seconds the engine will begin hitting on several cylinders and after 10 to 15 seconds will begin to run but not well or not on all six. Another 5 seconds idle smooths out and engine runs normally.
Institutional experience with this problem is lacking with the techs I use so I am looking for a checklist of troubleshooting steps.
Recent work to the car includes all fuel line hoses, fuel pump and injector servicing.