D 350 Pickup L6-359 5.9L DSL (1989)
Fuel Supply Line: Description and Operation
High Pressure Fuel Lines
HIGH PRESSURE FUEL LINES
CAUTION: The high pressure lines must be clamped securely and routed so they do not contact each other or any other component. Do not weld
or substitute lines. Use only the specified part number for the engine. An attached metal tag is used to identify each line with a part number.
High pressure fuel lines are designed and manufactured to deliver fuel at injection pressure to the injectors. The high pressure pulses will cause the
lines to expand and contract during the injection cycle. The length, internal size and rigidity of the lines is critical to smooth engine operation.
WARNING: A fuel leak from high pressure fuel line has sufficient pressure to penetrate the skin and cause serious bodily harm.