Installation manual
ENGINE
TROUBLESHOOTING
Problem
Probable
Cause
VerificatioR/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.
1b.
Broken
or
loose
belts
-
tighten/replace.
1c.
Loss
of
coolant
-
check
hoses,
hose
clamps,
drain
plug,
etc.
for
leaks.
1d.
Air
leak
in
system;
run
engine
and
open
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
the
oil
drain
hose
connection
.
.
2.
Oil
pressure
switch.
2.
Replace
oil
pressure
switch.
Exhaust
smoking
problems
1.
Blue
smoke.
1.
Incorrect
grade
of
engine
oil.
1a.
Crankcase
is
over-filled
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
then
shuts
down.
1.
Oil
pressure
switch
..
1.
Check
oil
pressure
switch.
2.
Faulty
overspeed
board.
2.
Faulty
overspeed
board
(Optional
Electronic
Governor)
3.
Water
temperature
switch.
3.
Check
water
temperature
switch.
4.
Exhaust
temperature
switch.
4.
Check
exhaust
temperature
switch.
5.
Fuel
pump.
5.
Check
fuel
pump
operation.
Engines & Generators
30