Fuel tank
The fuel tank is stamped from steel sheet. It has two sections and is installed under the rear seat in front of the rear axle.
Fuel tank capacity, l: 58.
Brand and type of drain valve for cars with carburetor engines: PE 20 439.
Fuel pump
On cars with carburetor engines, a Pierburg mechanical diaphragm-type fuel pump is installed, driven from the intermediate shaft by a pusher.
Pump capacity at crankshaft speed of 4000 rpm, l/h, not less than: 55.
Fuel supply pressure at a crankshaft speed of 4000 rpm, kg/cm2: 0.21-0.30.
Pusher length, mm: 36.
The thickness of the heat-insulating spacer assembly with the gasket, im-201 0.15.
Vehicles with fuel injection engines use an electric fuel pump, see «injection system».
Air filter
Air filter - with a replaceable dry filter element.
Brand and type: «320»: Purolator PH 1680 or Mann C 4 190; «323i» Purolator PM 1645.
Carburetor
Model car engine «320» OVG carburetor installed (Solex) 4A1 Emulsion Type, Dual Chamber, Sequential Throttling, Automatic Starter and Thermostatic Auxiliary Starter (to start a warm engine). At forced idle, the forced idle economizer is activated. Carburetor type according to the DVG catalog E 17 603.
BMW part number 1 266 255.
Nameplate color: blue.
Solex 4A1 carburetor calibration data
Solenoid shut-off valve
Brand and type: Pierburg PE 20 273.
Valve needle stroke, mm: 2.5±0.05.
Rated voltage, V: 12.
The maximum allowable voltage, V: 16.
Consumed current at a voltage of 12 V at the terminals, A: 0.25±0.02.
Vacuum regulator: Brand and type: Pierburg PE 20 464.