sound from gasoline engine !!!

winter has come, malfunctions have begun ... friends started 2 weeks ago, the problem has now gone until the sound of the gasoline engine. On the light ramp with 50 liters of gasoline, the car started to not start. When I pull the car straight or turn down the front of the car, this morning, I came to my workplace with my car, when I started the car 2 hours later, I started to hear the gas engine engine in the back seat. he was working loudly and he was getting a starter 2 weeks ago before the problem happened. If he took it to the repair shop, did anyone have a problem like this before? gif "border =" 0 "alt =" C o nfused "title =" C o nfused " />

what do you call a petrol engine? the problem may be caused by the regulator.