How to replace fuel regulator on Chevrolet Impala 2004?

Answer 1

Even though it is in open view, this is a really tight space, and small hands are good. First you need to make a little extra room. Using a 13mm socket, back off the bolt holding the throttle valve so it is flush and not protuding towards the regulator. Pull the throttle swinger back and out of the way and jam it in place with a long screwdiver fed from the back. Remove the PCV valve from the valve cover and connecting tube. Remove the vacuum line from the regulator.

To remove the bottom feed line, use a 15/16" open end or metric equivalant, turning clockwise when looking from the top. It will only move about 1/6 turn, then flip the wrench. When loose, pull the tube out as far as possible. To remove the screw holding the regulator in place, you will need a T-27 star driver, a 1/4" hex wrench, and a 1/4" socket. There is no room to get a rachet in there, and do not try using an Allen wrench or you will be so sorry. Put the T-27 driver into the socket, and slide the wrench over the driver so it is on the hex part. Put your contraption into the screw, using one hand to apply back pressure to hold it in place, and turning the wrench with the other. Once you get everything loose, you can kind of twist the regulator out.

Installation is the reverse, but be sure to lube both seals with a little oil and a q-tip. Tighten the T-27 screw until it is about where it needs to be, then make sure the bottom feed tube is pushed in all the way. You'll probably need needlenose pliers and a magnet to get the feeder tube nut back up, and start it manually, making sure it is straight before you put the wrench to it. Tighten both snuggly, and put everything else back the way it was. Turn the key and drive away.