Installation manual
ENGINE
TROUBLESHOOTING
The following troubleshooting table describes certain
problems, the probable causes
of
the problems, and the
recommendations to overcome the problems.
NOTE:
The engine's electrical system is protected by a
20-Ampere manual reset circuit breaker located on a
bracket on the left front side
of
the engine. The preheat
solenoid is mounted on the same bracket.
Problem
Probable
Cause
Verification/Remedy
Key
Switch
on,
PREHEAT
switch
1.
Battery
switch
not
on.
1.
Check
switch
and/or
battery
connections.
depressed:
no
panel
indications;
2.
20-Amp
circuit
breaker
tripped.
2.
Reset
breaker;
if
breaker
trips
again,
check
preheat
sole-
fuel
solenoid,
electrical
fuel
pump
and
preheat
solenoid
not
energized.
noid
circuit
and
check
circuit
for
shorts
to
ground.
3.
10
Amp
breaker
tripped.
3.
Check
voltage
at
and
after
breaker.
4.
Loose
battery
connections.
4.
Check
(+)
connection
on
starter
solenoid
and
(-)
connection
to
engine
ground
stud.
Check
battery
cable
connections.
5.
Preheat
solenoid
not
operating.
5.
Check
Solenoid.
Key
Switch
on,
PREHEAT
switch
1.
Connection
to
solenoid
faulty.
1.
Check
connection
at
solenoid.
depressed;
START
switch
2.
Faulty
START
switch.
2.
Check
switch
with
ohmmeter.
depressed;
no
starter
engagement.
3.
Faulty
solenoid.
3.
Check
that
12
volts
are
present
at
starter
solenoid
activation
connection.
4.
Neutral
safety
switch
open.
4.
Shift
lever
in
neutral
-
check
switch.
5.
Loose
battery
connection.
5.
Check
battery
connection.
S.
Low
batteries.
6.
Check
battery
charge
state.
START
switch
is
depressed;
panel
1.
Poor
connections
to
fuel
solenoid.
1.
Check
connections.
indications
OK;
start
solenoid
OK;
2.
Defective
fuel
solenoid.
2.
Check
that
12
volts
are
present
at
the
fuel
solenoid
not
functioning.
(+)
connection
on
the
fuel
run
solenoid.
No
ignition:
cranks,
but
does
not
1.
Faulty
fueling
system.
1.
Check
that
fuel
valves
are
open.
start;
fuel
solenoid
energized.
1a.
Check
for
air
in
fuel
system.
Bleed
air
from
engine
fuel
system.
1b.
Filters
clogged.
(Replace
filters
and
bleed
fuel
system
of
air.)
2.
Preheat
solenoid
faulty.
2.
Check
solenoid.
No
ignition.
Fuel
solenoid
energized.
1.
Starting
battery
failure
1.
Check
start
batteries.
Engine
cranks
slowly,
then
fails.
1a.
Switch
to
combine
house
and
start
batteries.
1b.
Replace
batteries.
2.
Water
in
engine
2.
Exhaust
system
failure
-
raw
water
has
backed
into
cylin-
ders.
Water
must
be
removed
from
engine
- a
serious
problem
that
can
be
corrected.
Engine
can't
be
stopped.
1.
STOP
switch
failure.
1.
Check
switch
will
not
open
run
circuit.
Manually
move
the
shutoff
lever
on
the
injection
pump
side.
Test
switch
with
ohmmeter.
2.
Fuel
run
solenoid
will
not
de-energize.
2a.
Manually
disconnect
the
12
volt
connection
to
the
fuel
run
solenoid
at
the
injection
pump.
2b.
Loosen
high
pressure
injector
lines
at
each
injector.
Be-
ware
of
fuel
spray.
3.
Check
DC
alternator
for
feedback
3.
Disconnect
the
R
terminal.
through
regulator
circuit.
Engine
stops.
1.
Fuel
lift
pump
failure.
1.
Fuel
lift
pump
should
make
a
distinct
ticking
sound.
Replace
pump
with
spare.
2.
Switches
and/or
wiring
loose
or
dis-
2.
Inspect
all
wiring
for
short
circuits
and
loose
connections.
connected.
Inspect
switches
for
proper
operation.
3.
Fuel
Starvation
3.
Check
fuel
supply,
fuel
valves,
fuel
lift
pump.
4.
20-amp.
circuit
breaker
tripping.
4.
Check
for
high
DC
amperage
draw
during
operation.
En-
sure
switch
is
not
overly
sensitive
to
heat
which
would
cause
tripping.
5.
Exhaust
system
is
restricted.
5.
Check
for
blockage,
collapsed
hose,
carbon
buildup
at
exhaust
elbow.
6.
Water
in
fuel.
6.
Pump
water
from
fuel
tank(s);
change
filters
and
bleed
fuel
system.
Battery
not
charging.
1.
Alternator
drive
1.
Check
drive
belt
tension.
Alternator
should
turn
freely.
Check
for
loose
connections.
Check
output
with
voltmeter.
I~l
WESJERBEKE
I Engines & Generators
31