Toyota COMPUTER-CONTROLLED SYSTEM User Manual

3 . FUEL FILTER
EFI - Fuel Syste m
The fuel filter filters out dirt and other foreign
particles from the fuel .
Out
Q
Q
I n
4 . PULSATION DAMPER
OHP 4 8
The pulsation damper absorbs variations in fuel
line pressure by means of a diaphragm .
Delive ry pipe
OHP 4
8
REFERENCE
In the 4A-FE engine and some other engine
models, the pulsation damper is no longer
necessary because the fuel line has been
simplified .
5 . PRESSURE
REGULATO R
The pressure regulator regulates the fuel
pressure to the injectors in accordance with the
intake manifold pressure .
4
To fuel return hos e
PRESSURE-UP CONTROL SYSTEM
OHP 48
In some engines, the fuel pressure is increased by
the Engine ECU when the temperature of the
coolant or ambient temperature of the engine is
too high during engine cranking . The Engine ECU
causes more air to be drawn into the chamber of
the pressure regulator to increase the fuel
pressure . This prevents vapor lock at high engine
temperatures in order to help the engine start
when it is warm .
From
delive ry~>
pipe
Some models only
OHP 4
8
58

Toyota COMPUTER-CONTROLLED SYSTEM Specifications

General

Brand	Toyota
Model	COMPUTER-CONTROLLED SYSTEM
Category	Automobile Accessories
Language	English