Car Wise: Diagnose A Fuel Pressure Regulator & Fix It Yourself
Your fuel pressure regulator is responsible for making sure your engine receives the correct amount of fuel. The fuel pump will send more than needed, so your regulator will make sure that excess gasoline is returned. The following guide will help you diagnose and fix a bad fuel pressure regulator.
Signs Of A Bad Fuel Pressure Regulator
Symptoms to watch out for:
Darkened spark plugs: All you need to do is check your spark plugs for a black, sooty appearance.