Fuel Delivery System; Fuel Pump - Suzuki Jimny Service Manual

6E-6 ENGINE AND EMISSION CONTROL SYSTEM

Fuel Delivery System

The fuel delivery system consists of the fuel tank (1), fuel pump (2), fuel filter (3), fuel pressure regulator (11),
delivery pipe (9) and fuel injectors (10).
The fuel in the fuel tank is pumped up by the fuel pump, filtered by the fuel filter and fed under pressure to each
injector through the delivery pipe.
As the fuel pressure applied to the injector (the fuel pressure in the fuel feed line) is always kept a certain
amount higher than the pressure in the intake manifold by the fuel pressure regulator, the fuel is injected into the
intake port of the cylinder head when the injector open according to the injection signal from ECM.
The fuel relieved by the fuel pressure regulator returns through the fuel return line (8) to the fuel tank.
4. Fuel cut valve
5. Fuel tank pressure control valve
6. To EVAP canister 12. To intake manifold (vacuum passage)
7. Fuel feed line

Fuel pump

An in-tank type electric pump has been adopted for the fuel pump
(1). Incorporated in the pump assembly are;
• Tank pressure control valve (2) which keeps the pressure in
the fuel tank constant, and prevents the fuel from spouting
and tank itself from being deformed.
• Relief valve (3) which prevents the pressure in tank from ris-
ing excessively.
• Fuel cut valve (4) which closes as the float rises so that the
fuel will not enter the canister when the fuel level in the tank
rises high depending on the fuel level in the tank and the
vehicle tilt angle.
Also, a fuel filter (5) is included and a fuel level gauge (6) is
attached.