XJR (X300) L6-4.0L SC (AJ16) (1995)
Fuel Pressure: Technical Service Bulletins
Tool - Fuel Pressure Testing
05.1-06
DATE:
4/96
Sedan Range
MODEL:
1995 MY
Sedan Range
VIN:
720001-ON
Special Tool JD 208 - Fuel Pressure Testing - Method of Use
ISSUE:
Special Tool JD 208 (Illustration 1) has been introduced to permit the connection of a fuel pressure gauge on AJ16 engines for diagnostic purposes. The
tool is a threaded "T" adaptor with a Schrader valve for connecting a suitable gauge set. When used with a compatible gauge set (such as Snap-on Tools
Part No. MT 337A), JD 208 provides a means to check fuel rail pressure on a running engine under workshop conditions. It is not suitable for use on
V12 engines.
ACTION:
WARNING:
Observe all fire and safety precautions detailed in the XJ6-XJ12 Vehicle Service Manual, Section 5.1 while working on the fuel system.
CHECKING FUEL PRESSURE
1.
Remove the oxygen sensor heater relay and run the engine at idle to depressurize the fuel system (19.50.02).
2.
Have absorbent shop towels ready to soak up fuel spillage in the following steps.
3.
Remove the cover over the fuel injectors.
4.
Disconnect the union between the fuel supply pipe and the fuel rail. Wipe up any fuel spillage.