caioatpl It usually takes a few moments to get flowing if it remains too low for a greater period of time than the flight manual specifies -shut down
Always refer such questions to the Flight Handbook and for better details about things such as engine leaning---refer to the Engine manufacturers operating manual--as the engine company is different from the airframe company so that usually provides a more detailed answer than the flight manual this helps save fuel or engine maintenance or headaches...
Ho dimenticato quasi tutto di mi italiano perche faccia molto tempo allorche lo parlai ma riccordo un poco
Ciao...