Navistar International DT 466 Diagnostic/Troubleshooting Manual page 269

Fuel Possible Causes (cont.)
High fuel pressure (pulsating fuel pressure)
• Debris in the fuel regulator valve
• Inoperative fuel pressure regulator valve.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
6 PERFORMANCE DIAGNOSTICS
•
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Combustion gases leaking into fuel system
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