K 20 3/4 Ton Pickup 4WD V8-379 6.2L DSL VIN J FI (1983)
Fuel Filter: Description and Operation
Fuel Filter System
PURPOSE
The fuel filters remove foreign material which could damage the injection pump or clog the injector nozzles.
OPERATION
The mechanical pump--located on the right side of the engine--pulls fuel from the fuel tank, through the primary filter and pumps it through the
secondary filter--mounted on the inlet manifold--to the injection pump.
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A primary filter is located on the front of the dash on C+K models. The primary filter also has water draining provisions.
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A secondary in line filter is the final filter before fuel enter the injection pump.
COMPONENTS
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Fuel tank with water sensor and screen filter.
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Primary fuel filter.
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Mechanical fuel pump.
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Secondary fuel filter.
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Fuel line filter.
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Injection pump.
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High pressure lines and nozzles.
