Ensure assembly is depressurized by removing fuel tank cap and releasing
pressure from fuel system by opening the pressure relief valve on the fuel
injection supply manifold assembly in the upper RH corner of the engine
compartment. Use MFI Pressure Gauge T80L-9974-B.
Remove vacuum line at pressure regulator.
Remove three Allen retaining screws from regulator housing and discard.
Remove pressure regulator assembly, gasket and O-ring. Discard gasket and
O-ring.
If scraping is necessary, be careful not to damage fuel pressure regulator
or fuel supply line gasket surfaces.
Installation
NOTE: Never use silicone grease. It will clog the injectors.
Lubricate new fuel pressure regulator O-ring with clean engine oil
XO-10W30-QSP (ESE-M2C153-E) or equivalent.
Ensure gasket surfaces of fuel pressure regulator and fuel injection
manifold are clean.
Install new O-ring and new gasket on regulator.
Using new Allen head retaining screws, install fuel pressure regulator on
injector manifold. Tighten three retaining screws to 3.0-4.5 Nm
(26-40 lb-in).