466 ENGINE <1992> - Fuel and Emission Control Parts
IX-49
INSPECTION EGR VALVE (1) Check EGR valve for sticking or carbon deposits. If such conditions exist, clean or replace EGR valve. (2) Connect a hand vacuum pump to the nipple of EGR valve and plug other nipple. (3) Apply a vacuum of 500 mmHg (19.7 in. Hg) to make sure that a vacuum is maintained. If there is a leak, replace the EGR valve. In addition, check the valve for its opening and closing by applying and removing a vacuum.
6EMO3RL
I
INJECTORS (1) Using an ohmmeter (circuit tester), test for continuity between terminals of injector; the circuit should be closed. If failure is detected, replace the injector. Standard value: N o n - t u r b o 1 3 - 16 IR [at 20°C (68”F)l 2 - 3 R [at 20°C (68”F)] Turbo
6FU1920
INSTALLATION SERVICE POINTS I)A4 INJECTOR INSTALLATION
SOHC
(1) Before installing an injector the rubber O-ring must be lubricated with a drop of clean engine oil to aid in installation.
6EN0520
(2) Install the injectors from the top end into the fuel rail. Be careful not to damage the O-ring during installat.ion.
DOHC
6EN0521
I)B4 FUEL PRESSURE REGULATOR INSTALLATION (1) Before installing the pressure regulator the O-ring must be lubricated with a drop of clean engine oil to aid in installation.
1 TSB Revision