Installation manual
ENGINE
TROUBLESHOOTING
Problem
Probable
Cause
Verification/Remedy
Generator
engine
overheats/shuts
down.
1.
Raw
water
not
circulating.
1.
Raw
water
pump
failure.
Check
impeller-
replace.
2.
Coolant
not
circulating.
2.
Obstruction
at
raw
water
intake
or
raw
water
filter.
2a.
Thermostat-
remove
and
test
in
hot
water.
Replace
thermostat.
2b.
Loss
of
coolant-
check
hoses,
hose
clamps,
drain
plug,
etc.
for
leaks.
2c.
Broken
or
loose
belts
-tighten/replace.
2d.
Air
leak
in
system;
run
engine
and
open
the
pressure
cap
to
bleed
air.
Add
coolant
as
needed.
Generator
engine
shuts
down,
1.
Loss
of
oil.
1.
Check
dipstick,
look
for
oil
leaks
at
oil
filter
and
at
Low
oil
pressure.
oil
drain
hose
connection.
2.
Oil
pressure
switch.
2.
Replace
oil
pressure
switch.
Generator
engine
shuts
down,
1.
Exhaust
too
hot.
1.
Check
raw
water
injection
flow,
look
for
exhaust
obstruction.
High
exhaust
temperature.
2.
High
temperature
switch
opens
at
.
2.
Check
for
satisfactory
operation
with
switch
bypassed,
too
low
a
temperature.
check
with
ohmmeter,
replace
if
faulty.
Exhaust
smoking
problems
1.
Blue
smoke.
1.
Incorrect
grade
of
engine
oil.
1a.
Crankcase
is
overfilled
with
engine
oil
(oil
is
blowing
out
through
the
exhaust).
2.
White
smoke.
2.
Engine
is
running
cold.
2a.
Faulty
injector
or
incorrect
injector
timing.
3.
Black
smoke.
3.
Improper
grade
of
fuel.
3a.
Fuel
burn
incomplete
due
to
high
back
pressure
in
exhaust
or
insufficient
air
for
proper
combustion
(Check
for
restrictions
in
exhaust
system;
check
air
intake.).
3b.
Improperly
timed
injectors
or
valves
or
poor
compression.
3c.
Lack
of
air-
check
air
intake
and
air
filter.
Check
for
proper
ventilation.
3d.
Overload.
TROUBLESHOOTING
WATER
TEMPERATURE
AND
OIL
PRESSURE
GAUGES
If
the gauge reading
is
other than what is normally indicated
by the gauge when the instrument panel is energized, the first
step
is
to check for 12 volts
DC
between the ignition (B+)
and the Negative (B-) terminals
of
the gauge.
Assuming that there
is
12 volts as required, leave the instru-
ment panel energized (key switch on) and perform the
following steps:
1.
Disconnect the sender wire at the gauge and see
if
the
gauge reads zero, which is the normal reading for this situa-
tion.
2.
Connect the sender terminal at the gauge to ground and
see
if
the gauge reads full scale, which
is
the normal reading
for this situation.
If
both
of
the above gauge tests are positive, the gauge
is
undoubtedly
OK
and the problem lies either with the conduc-
tor from the sender to the gauge
or
with the sender.
If
either
of
the above gauge tests are negative, the gauge
is
probably defective and should be replaced.
Assuming the gauge is
OK, check the conductor from the
sender to the sender terminal at the gauge for continuity.
Check that the engine block is connected to the ground.
Some starters have isolated ground terminals and
if
the bat-
tery is connected to the starter (both plus and minus termi-
nals), the ground side will not necessarily be connected to the
block.
Engines & Generators
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