Dynamic Tests; Cylinder Drop Tests; Fuel Control Adjustment; Inductive Amp Meter Test - BRP E250DHLSCS Service Manual

SYSTEM ANALYSIS

DYNAMIC TESTS

DYNAMIC TESTS

Cylinder Drop Tests

Use the Evinrude Diagnostics software Dynamic
Tests to momentarily disable one cylinder while
the outboard is running.
The Dynamic Ignition test disables the ignition
•
and fuel injection circuits to a cylinder.
The Dynamic Fuel test momentarily disables
•
one fuel injector circuit.
By dropping one cylinder, RPM and running qual-
ity changes can be compared for each cylinder.
Test the outboard at the RPM
IMPORTANT:
where the problem is occurring. Use the test pro-
cedures to identify inconsistencies in voltages and
cylinder performance. Once a circuit has been
identified as malfunctioning, inspect all related
wiring and connections. Check all voltage inputs
and grounds; and perform resistance tests for all
circuits before replacing any suspect components.
Dynamic Tests can be used with:
A timing light to determine how other cylinders
•
are affected by one cylinder being "dropped"; or
A voltmeter to check voltage changes on electri-
•
cal circuits.
Dynamic Tests Screen
DO NOT misinterpret tests run at
IMPORTANT:
IDLE. The idle speed controller in the EMM com-
pensates to maintain a constant IDLE speed. The
Dynamic Tests screen includes a function to tem-
porarily disable the idle controller.
112

Fuel Control Adjustment

Use this test is to help identify a cylinder that may
be too rich or too lean. This feature should not be
used by itself to identify a faulty injector.
Evinrude Diagnostics software allows temporary
adjustments to the fuel flow characteristics of the
injectors. Factory fuel flow settings are restored
when power to the EMM is returned to OFF.
Test the outboard at the RPM where the problem
is occurring.
If the outboard run quality improves with a fuel
control adjustment, eliminate other possibilities
before replacing an injector:
Refer to Fuel System Pressure Test on
•
p. 170.
Refer to Running Fuel System Tests on
•
p. 121.
IMPORTANT:
IDLE. The idle speed controller in the EMM com-
pensates to maintain a constant IDLE speed.

Inductive Amp Meter Test

Use an inductive amp meter to monitor battery
charging and current flow. Identifying erratic
006808
amperage in a circuit can be used to isolate a
problem component.
DO NOT misinterpret tests run at
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