I am having issues starting my car. It requires about 5 seconds of turning the key before it turns over. And it idles pretty rough. Also if I’m low on gas and I’m turning left the engine starts to lose power like it’s completley out of gas.

So two things. I want to replace the pressure regulator and then if that doesn’t fix the starting issue then I will replace the fuel pump. But I don’t know where the pressure regulator is located. I read it’s on the fuel rail but I don’t know where that is either. Can someone explain where it is ? And or give any advice to solving this issue. I’ve already replaced the fuel filter, EGR valve and gasket and I’ve replaced all six spark plugs.