Hi, this problem has me stumped. My Homelite 1100w generator starts and runs perfectly from cold. If I stop it and then wait for around a minute, it will restart no problem, if I wait for approx. 3-5 minutes, it will not restart. The engine has to cool right down and then it will restart and run perfectly. The fuel flow is alright and there is a new spark plug in it. Please, can anyone help?