Fuel Rail: Description and Operation

PURPOSE
The fuel injection supply manifold delivers high-pressure fuel from the vehicle fuel supply line to the fuel injectors.

CONSTRUCTION
The fuel injection supply manifold consists of:
- mounting flanges for the fuel pressure regulator.
- mounting attachments which locate the fuel injection supply manifold and provide fuel injector retention.
- fuel inlet and outlet connections with push connect fittings.

A fuel pressure relief valve is located on the fuel injection supply manifold for diagnostic tests and field service fuel pressure bleeding.