Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 158

MPI -
Injector
REMOVAL SERVICE POINT
AA" DELIVERY PIPE/INJECTOR REMOVAL
Remove the delivery pipe (with the injectors attached to it).
Caution
Care must be taken, when removing the delivery pipe,
not to drop the injector.
INSTALLATION SERVICE POINT
"AA INJECTOR/FUEL PRESSURE REGULATOR/
HIGH-PRESSURE FUEL HOSE INSTALLATION
1. Apply a drop of new engine oil to the O-ring.
Caution
Be sure not to let engine oil in the delivery pipe.
2. While turning the injector, high-pressure fuel hose and
fuel pressure regulator to the right and left, install the
delivery pipe, while being careful not to damage the O-ring.
After installing, check that the hose turns smoothly.
3. If it does not turn smoothly, the O-ring may be trapped,
remove the fuel pressure regulator and then re-insert
it into the delivery pipe and check once again.
4. Tighten the high-pressure fuel hose to the standard torque,
and tighten the fuel pressure regulator to the specified
torque.
Tightening torque:
9 Nm (Fuel pressure regulator)
13D-93