Troubleshooting Logic
Page
9A-2
Base
Engine Components
DODGETurbo
Diesel
Troubleshooting Logic
Engine
Diagrams
A
schematic
of
each
of the major engine
systems
is provided at the beginning of the Section of the manual devoted
to troubleshooting and repairing
that
particular
system.
The diagrams depict
flow
through
the
various
engine
systems.
The
information
and configuration of the components
illustrated
in
the drawings are of a general nature.
Each
Section also
contains
a
discussion
regarding diagnosing malfunctions for
that
specie
system.
A knowledge of
the
systems
can help you troubleshoot and repair the engine.
Problem Isolation and Correction
The
following
Troubleshooting logic is designed to heip you organize your study of a problem and plan a procedure
to correct it. The
series
of fault/logic charts given do not provide all the
answers,
but
they
should stimulate a
train
of
thought
that
will
lead you to the
source
of the trouble.
Be
sure
to
consider
any maintenance or repair action
that
could have
caused
the problem.
If the engine
surges
or
runs
rough
Initially
after
not being
used
for 2 months or more, do not
assume
that
the engine
has
a malfunction. Varnish can
form
on the internal parts of the injection
pump
and the oil
film
can drain
from
the
piston rings. Operate the engine for at least 5 minutes
before
troubleshooting.
The
basic
procedure
is
as
follows:
• Study the problem thoroughly.
• Relate the symptoms to your knowledge of the engine components and
systems.
- Double-check
before
beginning the
disassembly.
-
Solve
the problem by deduction starting
with
the
easiest
things.
• Determine the
cause
of the problems and make a thorough repair.
-
After
making corrections, operate the engine in normal conditions to verify the
cause
of the problem was
corrected.
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