Success story - replaced fuel pressure regulator - Nissan Jan 13, 20161. Pull the fuel pump fuse and start the engine a few times until it doesn't start at all. 2. Remove the plastic engine cover. 3. Unscrew the two screws holding it down and the loosen the fuel hose clamp. 4. Wrap the towel around the regulator. Fuel will spray everywhere for a second like it always does when you do this sort of thing. 5. Infiniti Parts - Genuine OEM Infiniti Parts and Infiniti is a brand known for cutting-edge technology and engineering. Offering luxury, performance, quality, and reliability, Infiniti is an affordable luxury brand focused on sport and value. Infiniti Parts Deal offers an extensive catalog of genuine OEM Infiniti parts and accessories for a variety of years and models at discounted prices.