Engine
Fuel system
20v
Marea- Marea Weekend
ft
99 range
10.
INJECTORS (0.280.155.770)
The twin jet type injectors are fitted on the inlet manifolds, immediately before the inlet valves.
These injectors are specific to engines with 4 valves per cylinder, in effect making it possible to direct the
jets towards the two inlet valves.
The jets of fuel which come out of the injector at a pressure of 3 bar are instantly atomized forming two
cones of about 10° each.
The operation of the injectors is the "phased, sequential" type, i.e. the five injectors are operated accord-
ing to the inlet sequence of the engine cylinders, whilst the supply can already start for any cylinder dur-
ing the expansion stroke until the inlet stroke has already commenced.
The injectors are fixed by the fuel manifold, which presses them into the seats in the inlet manifold. They
are also secured to the fuel manifold by means of "safety clips". Two rubber seals (10) and (11) ensure
the seal on the inlet manifold and the fuel manifold.
1. Injector body
2. Needle
3. Magnetic core
4. Coil spring
5. Winding
6. Injector nose
7. Adjustable spring
8. Fuel filter
Connector wiring
The numbers indicate the corresponding control
unit pins arranged in the order of the cylinder
numbers.
4A26LJ01
9. Electrical connection socket
10. Fuel seal
11. Vacuum seal
Checking the resistance
The injector resistance can be measured by dis-
connecting the connector and connecting an
ohmmeter as illustrated in the diagram.
Resistance value 16.2 ohm
26
Print n° 506.763/14
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