OEM GMC Jimmy Fuel Pressure Regulator

GMC Jimmy Fuel Pressure Regulator Parts Questions & Experts Answers

• Fuel Pressure Regulator
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  Q: How to service and repair the fuel pressure regulator on GMC Jimmy?

  A: The first step of Fuel Pressure Regulator servicing requires using fuel pressure gauge (J 34730-1A) alongside other needed tools. The first step should involve disconnecting the negative Battery Cable followed by lowering fuel system pressure. The initial service begins with removal of the upper intake manifold assembly after which you should remove the Fuel Pressure Regulator retainer clip. Use a shop towel to contain spilled fuel as you gently extract and turn the Fuel Pressure Regulator from its regulator housing by employing a pulling and twisting motion. After disconnecting electricity from the negative side of the battery and draining system pressure you must take away the regulator seal lower o-ring , the regulator assembly filter , the regulator seal upper o-ring , and the regulator seal back up ring . Apply a cover over the Fuel Pressure Regulator housing to stop contamination before discarding all o-rings. Inspection of the filter screen must happen before regulator reinstallation because regulator replacement might be required when contamination exists. Apply engine oil on new o-rings before placing in their respective order of the regulator seal back up ring , the regulator seal upper o-ring , the regulator assembly filter , and the regulator seal lower o-ring . Position the vacuum tube downward when building the regulator then fasten it by installing the retainer clip. The service procedure continues with the installation of the upper manifold assembly while tightening the fuel filler cap followed by reattaching the negative Battery Cable. Complete the leak inspection procedure by activating the ignition for two seconds followed by ten seconds of off time then back to on position to verify fuel leakage.