Fuel Injectors; Fuel Rail Removal - Mercury 200 OptiMax Jet Drive Service Manual

Fuel Injectors

A fuel injector is an electromagnetic device. The precision mechanical components are controlled by a solenoid in the injector.
The solenoid is energized by a driver in the PCM that controls the on time of the solenoid by providing a ground. Six fuel injectors
are used to provide fuel from the fuel rail to the direct injectors. The fuel injectors are mounted in the fuel rails.
a
b
Meter Test Leads
Red
Injector pin

Fuel Rail Removal

Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or death
due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the battery
before maintaining, servicing, installing, or removing engine or drive components.
Failure to release pressure from the fuel system will result in fuel spraying out, which can cause a fire or explosion. Allow the
engine to cool completely and release all fuel pressure before servicing any part of the fuel system. Always protect eyes and
skin from pressurized fuel and vapors.
1. Disconnect both battery leads from the battery.
90-8M0050731 MAY 2011
e
d
c
f
45211
Fuel Injector Resistance Test
Black
Injector pin
a - Cylinder head
b - Direct injector
c - Fuel/air rail
d - Air passage
e - Fuel passage
f - Fuel injector
Meter Scale
Ω
WARNING
!
CAUTION
!
Direct Fuel Injection
Reading (Ω)
1.7–1.9 Ω
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