Specifications
ENGINE
TROUBLESHOOTING
Problem
Probable
Cause
Verification/Remedy
Generator
engine
overheats/shuts
down.
1.
Coolant
not
circulating.
1.
Thermostat
-
remove
and
test
in
hot
water.
Replace
thermostat.
1a.
Loss
of
coolant
-
check
hoses,
hose
clamps,
drain
plug,
etc.
for
leaks.
1
b.
Broken
or
loose
belts
-
tighten/replace.
1c.
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
Iowa
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.
Engine
starts,
runs
and
shuts
down.
1.
Oil
Pressure
switch.
1.
Check
oil
pressure
switch.
2.
Faulty
overspeed
boartd.
2.
By-pass
the
overspeed
board
to
test.
3.
Water
Temperature
switch.
3.
Check
water
temperature
switch.
Engine
starts,
runs
at
idle
..
1.
Electronic
goverbor
system
faulty.
1.
Check
governor
syustem
components.
Engines & Generators
32