Fuel Delivery System - Suzuki GRAND VITARA XL-7 Owner's Manual

ENGINE AND EMISSION CONTROL SYSTEM (SEQUENTIAL MULTIPORT FUEL INJECTION FOR H27 ENGINE) 6E2-7

Fuel Delivery System

The fuel delivery system consists of the fuel tank, fuel pump, fuel filter, fuel pressure regulator, delivery pipe and
fuel injectors.
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 opens according to the injection signal from ECM (PCM).
The fuel relieved by the fuel pressure regulator returns through the fuel return line to the fuel tank.
[A] : Fuel 1. Fuel tank
[B] : Air 2. Fuel pump
3. Fuel filter
4. Fuel feed line
5. Fuel return line
6. Fuel pressure regulator
7. Vacuum hose for fuel pressure regulator
8. Intake manifold surge tank
9. Fuel injector
10. Fuel delivery pipe
11. Throttle valve