5 HARD START AND NO START DIAGNOSTICS 173
Possible Causes
•Airfilter element clogged or dirty
• Snow in air filter inlet
•Iceinairfilter inlet
• Plastic bags or other foreign material in air filter
inlet
• Collapsed air fi lter
• Collapsed inlet piping or hoses
• On engines recently repaired, rags or cap plugs
mayhavebeenleftintheintakesystem.
• Tailpipe o r muffler may be damaged or collapsed.
• Exhaust restriction ( muffler or catalytic converter)
• Restricted or plugg ed Ca talyzed Diesel
Particulate Filter (CDPF) – if equipped
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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