OEM Chevrolet Colorado Fuel Pressure Regulator

Chevrolet Colorado Fuel Pressure Regulator Parts and Q&A

• Fuel Pressure Regulator
  88984221
  Q: How to replace the fuel pressure regulator on Chevrolet Colorado?

  A:

  The first step to replace the Fuel Pressure Regulator requires bleeding fuel system pressure from the system. Disconnect both the fuel return hose/pipe from the Fuel Rail and remove the atmospheric vent hose from the Fuel Pressure Regulator . Wash the Fuel Pressure Regulator along with its surrounding territory and afterward detach the Fuel Pressure Regulator screws (4, 5). Cut the Fuel Pressure Regulator and its o-ring seal off the Fuel Rail before disposal of the o-ring seal. You need to extract the Fuel Rail return pipe together with its o-ring seal from the Fuel Pressure Regulator but throw away this o-ring seal. Technology mandates testing the filter screen of the Fuel Pressure Regulator for foreign particles which require replacing if necessary. Installation requires fitting the new Fuel Pressure Regulator filter followed by application of minimal gm p/n 9981704 mineral oil to o-ring seals (2, 7). You should install o-ring seals (2, 7) to the Fuel Pressure Regulator first then to the Fuel Rail return pipe. Press the Fuel Rail return pipe together with its o-ring into the Fuel Pressure Regulator before pressing the Fuel Pressure Regulator joint with its o-ring into the Fuel Rail. Firmly torque the Fuel Pressure Regulator screws (4, 5) to 8 n.m (71 lb in). Connect one end of atmospheric vent hose to Fuel Pressure Regulator while the other end of fuel return hose/pipe attaches to Fuel Rail. Turn on the ignition for 2 seconds then wait 10 seconds before a final ignition turn on to verify fuel system leaks.