OEM Chevrolet Trailblazer Fuel Pressure Regulator

Chevrolet Trailblazer 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 Chevrolet Trailblazer?

  A: The fuel pressure relief procedure should be executed first to relieve fuel system pressure before Fuel Pressure Regulator service begins. Start by removing the air cleaner outlet resonator and disconnecting the engine wiring harness from its clips which attach at the front engine area. Strip away the vacuum hose connected to the Fuel Pressure Regulator before you clean dirt from the regulator along with its adjacent area. The Fuel Pressure Regulator retainer needs removal before the removal process can begin on the Fuel Pressure Regulator itself. Check the filter screen on the regulator for any signs of contamination as a new Fuel Pressure Regulator needs installation if contamination is present. The first step for installation includes placing the regulator filter and replacing the o-ring on the Fuel Pressure Regulator followed by o-ring lubrication with clean engine oil. Place the Fuel Pressure Regulator into the regulator housing on the Fuel Rail before you install the Fuel Pressure Regulator retainer while screwing it to achieve a torque of 8 n.m (71 lb in). The fuel return pipe retainer gets installed next while tightening its screw to 8 n.m (71 lb in). After that, attach both the fuel return pipe and vacuum line of the Fuel Pressure Regulator. Check fuel leaks by turning on the ignition for 2 seconds then waiting ten seconds for off followed by a turn of the ignition to check for fuel loss. Reengage the negative Battery Cable at this time. Reinstall the air intake resonator then place the engine wiring harness inside its retaining clips which are positioned at the front of the engine.