General description of the fuel and exhaust system (Peugeot 305)

The Peugeot 305 fuel system is traditional in layout and operating principle. The fuel tank is located at the rear of the car under the luggage compartment (- between the rear wheels). Fuel is drawn from the tank using a mechanical pump located on the timing case (under the distributor). The pump is controlled by a tappet driven by an eccentric cam on the oil pump/distributor shaft. The fuel pump includes a mesh filter.

Depending on the model, there may be two types of carburetor, which are similar to each other in many ways. The carburetor is single-chamber, downdraft, and has a mechanical accelerator pump and manual choke. The carburetor body is heated by hot coolant, which is taken from the engine cooling system. The mesh filter is located at the carburetor inlet.

Air enters the carburetor through a paper air filter. On SR models, in cold weather, warm air is supplied to the carburetor by an automatic intake air temperature control device. On GL and GR models, intake air temperature control is manual.