Running Ignition Tests - Evinrude E-Tec 40 HP Service Manual

SYSTEM ANALYSIS
IGNITION OUTPUT TESTS

Running Ignition Tests

Use Evinrude Diagnostics Software to monitor
system voltage (55 V).
Voltage readings at a specific spe ed (RPM)
•
should be steady
Refer to System Voltage Test on p. 80.
•
Use an inductive timing ligh t to monito r the sp ark
signal through each of the secon
(spark plug lead) wires.
Start outb oard a nd observe timing light stro be.
Look for a consistent flash and only one flash per
revolution. The strobe of the timing light should be
the same for each cylinder.
2
1. Timing light pick-up
2. Spark plug lead
82
Results:
Steady voltage and strobe, engine misfires:
Inspect or replace spark plugs
•
Refer to FUEL DELIVERY TESTS on p. 84
•
Check for internal engine damage.
•
Steady voltage, erratic strobe, engine misfires:
Inspect or replace spark plugs
•
Check CPS air gap and resistance.
dary circu it
•
Refer to Ignition Control Circuit Tests on
•
p. 83
Refer to Ignition Coil Tests on p. 83.
•
Voltages fluctuate, engine misfires:
Inspect battery and connections
•
Test capacitor and all ground connections.
•
Refer to System Voltage Test on p. 80
•
Refer to Ignition Control Circuit Tests on
•
p. 83
1
Refer to Ignition Coil Tests on p. 83.
•
IMPORTANT:
about 1200 RPM, the outboard may be in S.A.F.E.
Refer to S.A.F.E. WARNING SYSTEM on p. 62.
006492
If a running pro blem occurs at