Fuel Pump: Description and Operation

Fuel Pump:

This fuel pump is mechanically operated by an eccentric on or bolted to the end of the camshaft. The pump rocker arm riding against the eccentric provides the diaphragm up and down pump motion.
The pump cannot be disassembled for service and must be replaced if testing indicates it is not within performance specification.

NOTE: The fuel pump has a rollover check valve to meet Federal Motor Vehicle Safety Standards (FMVSS). Service replacement fuel pump must meet this requirement.