Alfa Romeo 159 Training Material page 87

ENGINE
1. Low pressure tube fitting
2. Pressure regulator valve
3. High pressure tube fitting
4. Pressure sensor
5. High pressure injectors
REMOVAL/REFITTING: Two versions of the injection rail are available: code AA for 1.9 litre engines and code BC for
2.2 litre engines. The injectors are fixed with o-rings only. The assembly is directly mounted on the head. A specific
tool is needed to fit the clamps on the sleeves. Simply press the injectors in their housings to assemble the rail. Then
fit the fastening screws at the same time with the correct tightening torque.
High pressure injectors
FEATURES: These electromagnetic high pressure injectors with compact 2-pin connector are connected directly to
the fuel rail and spray directly into the combustion chamber. The instant of opening of the injectors and the amount of
injected fuel are managed by the electrical control signal of the injectors. The injectors are fastened in their housings
with devices to prevent loosing into the fuel rail. This ensures correct positioning of the injectors on the head. Replace
the clamps after removal with the injector maintenance to ensure perfect tightness.
1. Fuel rail
2. Injector clamps
3. Injectors
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