TM 9-2815-220-24
ENGINE PERFORMANCE LOW
0019 00
MALFUNCTION 2:
(Continued)
Low stall speed with black exhaust smoke: (one or both banks).
PROCEDURE
OBSERVATION
ANALYSIS
Engine speed increases from speed
obtained in the previous step to
normal speed
Elements are dirty (refer
to pertinent vehicle
manual).
Open doors, remove
elements, clean element
chamber, re-install
elements and close doors.
Repeat stall test.
Engine speed remains the same.
Filters are not the
problem; continue to next
probable cause.
PROBABLE CAUSE
CORRECTIVE ACTION
c. Air cleaner hose collapsed.
(1) Inspect hose.
Replace as required.
d. Turbocharger air inlet blocked.
(1) Inspect turbocharger inlet (WP 0016,
Engine Abnormal Exhaust).
e. Turbocharger deficiency.
(1) Inspect turbocharger (WP 0016, Engine
Abnormal Exhaust).
MALFUNCTION 3:
Low stall with excess bluish exhaust smoke (one or both banks).
PROBABLE CAUSE
CORRECTIVE ACTION
a. Worn or damaged rings with excessive oil
consumption.
(1). Overhaul engine (WP 0178, Disassembly/
Assembly Procedure Sequence for the
AVDS 1790-2 Engine).
MALFUNCTION 4:
Low stall with one bank not firing.
PROBABLE CAUSE
CORRECTIVE ACTION
a. Fuel injection pump malfunction.
(1) Replace fuel injection pump (WP 0115,
Fuel Injection Pump Assembly
Replacement)
END OF WORK PACKAGE
WP 0019 00-4