Fuel Pressure Regulator Replacement
Written by wws944 - AACA Reatta Forum Member
Monday, 01 March 2010
The Field Service Manual does not detail the basic steps for replacing the Fuel Pressure Regulator. Below are instructions for replacing it.
- Remove the plastic cover from the intake manifold.
-
Remove the vacuum pipe that runs between the Regulator and the intake
manifold. (Intake manifold side first.)
-
Unplug the two connectors on the throttle body (MAF and TPS) so the
wiring harness can be moved out of the way.
-
Remove the breather hose that runs between the valve cover and the
throttle body (throttle body side first - by squeezing the clip and
sliding it backwards. The valve cover side pulls out of the rubber grommet.)
-
Unscrew the fuel return line at the Regulator with a 16mm flare nut wrench
(the kind that is almost a box, but has a slot cut in one side for the
tubing to slip through). Fuel will siphon back to the tank.
-
Place a rag under the Regulator to catch the screws that are sure to drop. Use a 10mm 1/4" drive socket with 1/4" ratchet. A 3/8" drive socket
and ratchet will not fit when attempting to unscrew the bottom screw.
-
Place more rags to catch the fuel when you yank the Regulator off. (BTW,
it might help to relieve the pressure via the schrader valve prior to
doing this.)
-
Apply a bit of oil to the O-ring on the Regulator. Insert it by gently
rocking, not twisting, it in. Tighten the two 10 mm screws "tight
enough". (No torque spec.)
-
Probably a good idea to replace the tiny O-ring at the end of the
return line. Then tighten it with the 16mm flare nut wrench.
-
Reassemble the vacuum hose, breather hose, and electrical
connections.
-
Turn key without starting the engine in order to activate the fuel
pump.
Check all connections carefully for leaks!
-
Start engine. It may take a few tries to get running. Try to keep
it running for a minute or so.
-
Turn ignition off, check for leaks, then restart. Hopefully, the
computer will set it to fast idle and start relearning this time.
-
Check for leaks again. Go for a short test drive.
Safety first! Make a final check of all connections for leaks.
-
Replace plastic cover.
Last Updated Monday, 01 March 2010100,00% of 2 voters found this article useful. Please click a colored ball to vote. I found this article  useful  not useful
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