This vehicle video tutorial contains a basic testing procedure using an automotive fuel pressure gauge as a detection tool. Correct fuel pressure and fuel pressure regulator operation is essential for your truck or car's engine to operate properly. Many engine run-ability problems can be related to a weak or failing fuel pump or faulty fuel pressure regulator. Problems can range from hard cold engine starting, low power and stalling while driving. This video contains visual information designed to aid a fuel pressure and fuel pressure regulator test, so see how to test the pressure regulator system on your automobile.