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TM 9-2330-398-24
2-16. TROUBLESHOOTING CHART (continued).
e.
ENGINE (continued)
(9) ENGINE EXHAUST IS BLACK OR FUEL
CONSUMPTION IS EXCESSIVE.
Initial Setup:
Tools/Test Equipment:
Equipment Conditions
• General mechanic's tool kit (Item 4, Appendix B)
• Semitrailer uncoupled (refer to TM 9-2330-398-10).
NOTE
Brown or black color in exhaust
indicates
incomplete
combustion.
Exhaust gases will never be invisible
but darker exhaust may indicate
trouble, especially if there is no
apparent change in engine condition.
2-47
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