ENGINE ABNORMAL EXHAUST
MALFUNCTION 1: (Continued)
Excessive black smoke (one or both banks).
Engine speed 1800-1950 rpm.
Engine power is
Repeat the preceding
Engine speed below 1800 rpm.
Power is below normal.
step, but operate
Engine speed above 1950 rpm.
engine for 30 seconds
slipping or fuel
injection pump is out of
Normal engine speed (1800-1950 rpm).
Air cleaner elements
Speed below normal.
Proceed to next step.
If engine speed increases from speed
The elements are dirty.
Open doors, remove
obtained previously to normal speed.
element chamber and
close doors. Repeat
(2) Service filter (clean, dry or replace). Refer
b. (Continued) Air cleaner restriction
to pertinent vehicle technical manual.
(element dirty, wet or blower motor
c. Air cleaner hose collapsed.
(1) Inspect, repair or replace (refer to pertinent
vehicle technical manual).
(1) Inspect and clean (refer to pertinent vehicle
d. Turbocharger air inlet blocked with plastic
plug, tape, rag, or other debris (usually one
e. Turbocharger compressor housing clamp.
(1) Tighten or replace clamp.
(1) Remove inlet elbows (refer to pertinent
f. Turbocharger defective (sticky, worn or
vehicle technical manual) and check for
failed bearings, seals and damaged
bearing play or looseness, impeller damage,
or excessive carbon deposits on turbine
wheel. Replace defective turbocharger
(WP 009, Turbocharger Assembly
Replacement (2CA & 2DA) or WP 0100 for
(1) Inspect exhaust manifold for leaks and
g. Exhaust manifold leak (loose flange, failed
repair as required (WP 0107, Exhaust
gasket, cracked or damaged manifold or
Manifolds and Associated Parts
WP 0016 00-2