5 HARD START AND NO START DIAGNOSTICS 191
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. Do test 14.4 –
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 instructi on s in the “Safety
Information” section of this manual.
Figure 234 ICP Test Kit
1. ICP sen sor adapter
2. Fitting, 13/16-16 NPT
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
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
©August 2008 Navistar, Inc.
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