TRBL
SHTG
Troubleshooting
9-7
6D81G11
Symptom: Engine cranks, but will not start (engine stop lanyard switch is operating nor-
mally).
• Check the ignition system.
• Check the fuel system.
• Check the compression pressure of the power unit.
Wet spark plugs?
Check the condition of the spark
plugs.
WARNING
• Do not touch any of the connections of
the spark checker leads.
• Do not let sparks leak out of the
removed spark plug caps.
• Keep flammable gas or liquids away,
since this test can produce sparks.
Start the engine using dried or
new spark plugs.
No
Yes
Yes
No
Check that the spark plugs pro-
duce sparks.
No
Yes
Are there sparks?
Check the ignition coil.
Check the ignition
system output peak
voltage.
Check the ignition spark using
the spark checker.
Continued on next page.
Check the fuel system.
Yes
No
Replace the main
and fuel pump relay.
Is there
continuity?
Check the main and fuel pump
relay for continuity.
Good spark?
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