Question about GMC Envoy
Replace fuel pressure regulator
Posted by Anonymous on
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Posted on Jan 02, 2017
the fuel pressure regulator is on the end of the fuel rail it is held on by a torx screw relieve the fuel pressure using the schrader valve on the fuel rail remove regulator holding screw and replace new regulator be carful not to damage o-rings on new regulator
Posted on Nov 02, 2008
SOURCE: Fuel Pressure Regulator Leaking
make sure engine is turned off, unplug the hose slowly and make sure there is no fuel pressure, you will have a little bit of gas leak but not much. Unlossen the bolt with torx head bit screw driver or driver, pull it off all the way. Once you got that one bolt off, push down on the locking clip that attaches your fuel regulator to manifold. Twist off the old pressure regulator and then install the new one in. Make sure you check the box your regulator came in, and look for the packaged o-ring. Its that simple. I just replaced mine in my 2001 alero, took more time analyzing how to pull the old one off. Hope this will help you.
Posted on Jan 04, 2009
My friend, I suggest you go by your local Auto Parts Store and purchase a Haynes Repair Manual on this vehicle. There are many sensors and electronic controls involved with this engine as I'm sure you already know. Any one of these can memic something that "it is not".
If your problem is the Pressure Regulator, it is located inside the "Tunnel Ram" intake manifold along with the multiport fuel injection system.
Now,,, before I went through the trouble and expense of going into the Intake Manifold, I would run the EMC in Diagnostic Mode and see if there are any codes present.
Posted on Feb 06, 2009
another engineers wet dream. think of it this way . what is normally in the intake when the engine is running.. answer vacume, hence the regulator gets its vacume without a hose connected to it as its already in a full time vacume chamber.no hose required . ps be carefull to seat the regulator and o rings securely into the housing befor you reattach the secureing metal clip.
good luck chris
Posted on Mar 23, 2009
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