GASOLINE VEHICLE - TROUBLESHOOTING
AND ELECTRICAL SYSTEM
Test Procedures
18
15.4.1.
If the starter/generator is good, replace the voltage regulator.
TEST PROCEDURE 14 – Ignition Spark
See General Warnings on page 1-1.
NOTE:
Keep the battery connected while performing this test procedure.
Use an spark gap test tool (Thexton 404
®
or equivalent)
1.
If necessary, see Testing Basics.
2.
Disable the vehicle.
3.
Set the Maintenance/Operate switch to MAINTENANCE.
4.
Remove the spark plug wire (1) from the spark plug (2)
.
5
3
1
2
4
464B
Figure 18-15
Ignition Spark Test
5.
Adjust the spark gap test tool (3) probes to approximately 18,000 volts (18 kV) setting (SE –
Small Engine
Setting
on the Thexton 404
®
tool).
6.
Connect the ignition spark gap test tool to the spark plug wire.
7.
Connect the alligator clip (4) to a solid engine ground (5).
8.
Start the engine.
8.1.
If the spark gap test tool has no spark, test the ignition circuit.
8.2.
If the spark gap test tool has a faint yellow or red color, test the ignition circuit.
8.3.
If the spark gap test tool has a strong blue spark, check the spark plug gap.
8.3.1.
If the spark plug gap is correct, replace the spark plug.
2021 Carryall 300 Maintenance and Service Manual
Page 18-27
Summary of Contents for Carryall 300 2021
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Page 567: ...GASOLINE KEY START MAIN HARNESS Wiring Diagrams Gasoline Key Start Main Harness 26...
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Page 575: ...ELECTRIC MAIN HARNESS Wiring Diagrams Electric Main Harness 26...
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