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DESCRIPTION & OPERATION
High-Pressure Fuel Injection Lines
High-pressure fuel lines for each cylinder
(Figure 38) are short (17 inches) and have the
same bends and the strength to withstand the
high fuel pressure generated by electronic unit
pumps. The same part number is used for all
cylinders and all engine models. Also, there are
no clamps used on these lines.
38
Figure 38 — Fuel Injection Lines
Fuel Injector Assemblies
Injector nozzles in the E-Tech™ differ from those
used in the E7 in that they have increased
material strength, a larger 22-mm diameter and a
higher pressure capability. These features are
essentially due to the higher operating pressures
generated by the unit pumps.
In the E-Tech™ engine, a pin on the nozzle
holder locates the nozzle in the cylinder head.
The locating pin is on the same side as the nozzle
holder fuel inlet port. Refer to Figure 39.
A check valve is incorporated in the nozzle
holders on current-production engines.
39
Figure 39 — Fuel Injector Nozzle Holder
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