Porsche EVAP System Flow Diagram - Fuel Tank Vent, Carbon Canister & Valves

This document is a hand-drawn schematic (digital drawing) illustrating the fuel vapor/evaporative (EVAP) system flow of a vehicle during normal operation with the engine on. Red lines with directional arrows trace the vapor flow path connecting the major components: the fuel tank (with a line labeled 'Top of fuel float'), a fuel line vent valve, a vent located behind the fuel door, a rejuvenation valve leading to the intake manifold, and a carbon canister. On the right side, the diagram shows a carbon valve (labeled as closed) and a shut-off valve (labeled as open) connected in an assembly, with an additional line labeled 'Unknown Source' feeding into it. Black arrows inside the carbon canister and valve assembly indicate internal flow direction. The diagram conveys how vapors travel from the fuel tank through the vent valve and canister and are purged to the intake manifold via the rejuvenation valve during engine-on operation. No year, make, model, part numbers, fuse data, or wire colors appear in the drawing; it is purely a conceptual flow schematic of the evaporative emissions/fuel vapor system.