Stone cold or hot starting is no problem at all, but if I've done a couple of miles, stopped and gone to start 5-10 mins later it takes a lot of cranking to start. This is quite predicitable, This has been the case for a couple of years but as I seldom do short journeys it doesn't matter much. Now, just recently a new development, after a difficult restart the car runs fine for anything from a few hundred yards to a mile or so and then stops responding to the throttle and just glides to a halt. After a lot more cranking it will restart, sometimes after a shortly stalling again and after that it will be absolutely fine. This has also happenned a few times now and is becoming very annoying and to add to the irritation there are no ECU codes. Aside from that the car runs perfectly. This appears to be temperature related so I changed the fuel temp sensor, but it made no difference. Any thoughts or inspiration?