Hello everybody, I have a 2000 Mercedes-Benz s500. I have a starting problem with my car. It is not happening every time. Sometimes when I turn on the ignition, the car doesn't start to firing. The engine is making a noise like trying to start. I know the starter is working, I guess pistons are working too, but I think the car cannot get enough gasoline to start the engine. The funny thing is when I use a jumper cable, and the engine is starting. I went to Autozone to check out my battery, they said it is perfect. Also, I check the car on the computer, and it said I have a misfire on cylinder 2.