Fuel Injectors - BRP Evinrude E-TEC G2 Service Manual

The fuel return rails can be identified by the red
locking device on each connector fitting.
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1
1
2
1. Fuel supply rail
2. Fuel return rail

Fuel Injectors

Fuel injectors are fuel metering, electric voice coil
actuators (55 V) bolted directly to the cylinder
head.
Electrical Circuit
The EMM controls the activation of each injector
by connecting and disconnecting the injector's
internal coil to ground.
The EMM monitors the fuel injector electrical cir-
cuit. If the injector is disconnected (open circuit),
the EMM:
Stores fault code 51 – 56
(second digit identifies cylinder)
Engine Monitor CHECK ENGINE display: ON
Fuel Flow Compensation
The flow rate of each injector is measured as part
of the manufacturing process. This information is
recorded and assigned to the injector by serial
number.
The EMM is programmed to compensate for vari-
ations in fuel flow. Each injector and its location on
the outboard is identified by the EMM. DO NOT
install an injector without updating the compensa-
tion software.
Each service injector includes its fuel flow infor-
mation. This software allows the EMM to be repro-
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grammed for this injector's unique fuel flow
characteristics.
NOTICE
Fuel injectors MUST NOT be moved from one
cylinder to another. EMM programming is
associated with the cylinder location of each
injector. Installing an injector on the wrong
cylinder can result in powerhead failure.
Injector Fuel Supply
Fuel is supplied to the injectors by the fuel circula-
tion pump and the fuel supply rail.
Each injector has internal fuel passages. These
passages are designed to:
•
Provide fuel to the injector's injection chamber
•
Route fuel through the injector housing to cool
the injector coil.
Fuel System
Components
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