OEM 2004 Cadillac Seville Fuel Pressure Regulator

2004 Cadillac Seville Fuel Pressure Regulator Parts Questions & Experts Answers

• Q: How to replace the fuel pressure regulator on 2004 Cadillac Seville?

  A: The first step to replace the Fuel Pressure Regulator requires you to relieve fuel pressure through servicing the quick connect fittings with metal collars. Most dirt must be cleaned from the Fuel Pressure Regulator before disconnecting the vacuum line. The retainer clip needs removal before carefully detaching the Fuel Pressure Regulator from the Fuel Rail by lifting then twisting it with help from a shop towel used to retrieve spilled fuel. The corrosion prevention process starts with removing first the lower 0-ring followed by the regulator assembly filter then the upper 0-ring and ending with the back up ring. The Fuel Pressure Regulator housing needs to be covered to protect the fuel system from entering foreign matter. Whenever you don't need to replace the regulator you must add new 0-rings to it after applying clean engine oil on them. After placing the back up ring then the upper 0-ring, filter, and lower 0-ring, secure the retainer clip. The procedure requires reinstallation of the vacuum line and negative Battery Cable. Verifying fuel leaks requires a safety check with the ignition on while the engine stays off for 2 seconds, followed by ignition off time of 10 seconds before repeating the ignition-on with engine-off procedure to view potential fuel leaks. Place the fuel injector sight shield as the final step.