B3.9 and B5.9 Series Engines
Fuel Injection Pump, In-Line, Spill Port Timing (005-013)
Section 5 - Fuel System - Group 05
Remove the No. 1 high-pressure fuel line from the fuel
NOTE: Lines 2 through 6 must not be removed or loosened.
When attaching the fabricated tube, do not bend the
No. 1 high-pressure fuel line. This could cause the in-
side of the fuel line to flake and cause injector failure.
A short length of high-pressure line that is compatible with
the fuel lines used on the engine should be bent in a ``U''
shape and installed onto the delivery valve holder of the
fuel injection pump. The line is used to observe when the
fuel is or not flowing through the delivery valve holder
assembly. Place a container under the tube to catch the
fuel or drain the fuel back into the spill port pump.
Remove the overflow valve from the fuel injection pump.
Install a 14-mm [0.55-in] threaded plug and sealing washer
into the fuel return port of the fuel injection pump.
NOTE: The fuel return port is located on the inboard front
side of the fuel injection pump for automotive in-line ap-
plication and on the outboard front side for most of the
Remove the supply line from the fuel filter head to the fuel
Attach the high-pressure outlet hose from the spill port to
the fuel injection pump supply port.