TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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REFERENCE INFORMATION NOTE If the exhaust is not colorless, it must be either white, blue, or black. If exhaust color is: WHITE ... ...._._ Go to fuel system, para. 2-28. Could be injector timing, DS level fault. BLUE..... ... ....Blue smoke is a sign of oil entering the combustion chambers. It usually enters past the piston rings or intake valve stem seals. This is an internal engine problem that can’t be handled at this level of maintenance. You may want to run the engine running tests, para. 2-24, before you notify DS maintenance (chapter 14). BLACK. .. ..... . Air Intake/exhaust. para. 2-29. TM 9-2320-387-24-l ENGINE LUBRICATION 2-195