TM 5-3895-373-20
2.13.
AIR INTAKE/EXHAUST SYSTEM DIAGNOSTICS.
Perform air intake and exhaust system tests whenever
the engine is running badly, when exhaust emissions are
black (fuel-rich), or if sent here by another diagnostic
test.
WARNING
Allow
engine
to
cool
before
performing
maintenance
on
the
muffler,
exhaust
pipe,
exhaust
manifold,
or
turbosupercharger.
Direct contact with hot surfaces can
cause serious burns. If maintenance
of a heated surface is necessary, use
insulated pads and gloves.
2-65