Manual Test - Engine Cold - Navistar International DT 466 Diagnostic/Troubleshooting Manual

5. When finished with this test, select Session from
menu bar, then Close.

Manual Test - Engine Cold

The Manual test is best used when diagnosing each
cylinder for cold misfire, considering EOT changes.
The EOT indicator will change from red to green when
engine temperature reaches 70 °C (158 °F) or higher.
• If the EOT indicator
comparisons are likely from cylinder to cylinder.
However, when diagnosing a cold misfire, a
technician can listen to tone changes from
cylinder-to-cylinder.
• When the EOT indicator is green and the engine
temperature is 70 °C (158 °F) or higher, fuel rate
and timing are more stable, making comparisons
from cylinder to cylinder more accurate. Overall
engine operation is more stable.
Shut off one injector at a time and listen for changes
in exhaust tone.
NOTE: If any injectors are removed and reinstalled
or replaced, test drive vehicle for 20 miles before
checking for misfire or rough idle.
Figure 92 KOER IDT I6 session
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
3 DIAGNOSTIC SOFTWARE OPERATION
is red, erroneous
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
1. While engine
D_KOER_IDT_I6.ssn
session file window and select OPEN to open
the session.
WARNING: To avoid serious personal injury,
possible death or damage to the engine or vehicle
- comply with the following: When running the
engine in the service bay, make sure the parking
brake is set, the transmission is in neutral or park,
and the wheels are blocked.
2. Select Diagnostics from menu bar.
Figure 93 Injector Disable tests
3. Select I6 Injector Disable Tests from drop down
menu.
87
is running, select
from the open