Under Valve Cover Leak Test - Navistar International DT 466 Diagnostic/Troubleshooting Manual

8. Using the EST or DMM, monitor injection control
pressure while cranking engine for 20 seconds.
9. Record results on Diagnostic Form.
• If injection control pressure increases above
28 MPa (4061 psi) (4.45 V), the high-pressure
pump and IPR are operating correctly for the
engine to start. Remove test hose assembly
from high-pressure pump.

Under Valve Cover Leak Test.

• If 28 MPa (4061 psi) (4.45 V) can not
be reached, continue with test 14.5 - IPR
Function.
14.4 – Under Valve Cover Leak Test
WARNING: To avoid serious personal injury,
possible death, or damage to the engine or
vehicle, read all safety instructions in the "Safety
Information" section of this manual.
Figure 234 ICP Test Kit
1. ICP sensor adapter
2. Fitting, 13/16-16 NPT
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
5 HARD START AND NO START DIAGNOSTICS
Do test 14.4 –
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Figure 235 13/16-16 NPT fitting and air chuck
adapters
1. Air chuck adapters
2. Fitting, 13/16-16 NPT
Figure 236 High-pressure oil hose, fitting, and
air chuck
1. Air chuck
2. Shut-off valve
3. Fitting, 13/16-16 NPT
4. High-pressure hose
EGES-270-1
191