Hard to restart when hot

[mmrobert38]

Yamaha 2006 F200TXR, When the temperature is in the 90s, the engine is very hard to restart, and after it finally start performance is poor till runs awhile
Any information will be helpful>

 

[boscoe]

Have you tried advancing the throttle a bit before cranking the motor to see if it starts more easily?

I am suspecting a vapor recovery system fault that is allowing fuel vapors to get into the intake system.