115F wont start for 15min after shutdown

[2010kacey1]

I have a 2002 four stroke115, runs great, cranks great, until engine is run for several miles then shut down for 10 to 15 min. Engine cranks over at normal RPM but no start. After 30 min it starts and runs great.
Recent maintenance, replaced water pump and thermostat, fuel filters replaced, looked good no trash or water.

[boats.net]

Check to see if water passages in fuel cooler are plugged up, number 12 in this diagram Yamaha Outboard Parts 2002 F115TLRA FUEL INJECTION NOZZLE Diagram