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