Installation manual
ENGINE
TROUBLESHOOTING
Problem
Probable
Cause
.Verilication/Remedy
Engine
slows
and
stops.
1.
Fuel
11ft
pump
failure.
1.
Fuel
lift
pump
should
make
a
distinct
ticking
sound.
Replace
pump
with
spare.
2.
Switches
and/or
wiring
loose
2.
Inspect
wiring
for
short
circuits
and
loose
connections.
or
disconnected.
Inspect
switches
for
proper
operation.
3.
Fuel
starvation.
3.
Check
fuel
supply,
fuel
valves,
fuel
11ft
pump.
4.
20
Amp
circuit
breaker
tripping.
4.
Check
for
high
DC
amperage
draw
during
operation.
Ensure
breaker
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
watarfrom
fuel
tank(s);
change
filters
and
.
bleed
fuel
system
.
7.
Air
Intake
obstruction.
7.
Check
air
Intake
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
fnter.
2a.
Thermostat
-
remove
and
test
In
hot
water.
Replace
thermostat.
2b.
Loss
of
coolant
-
check
hoses,
hose
clamps,
drain
plug,
etc.
for
leaks.
20.
Broken
or
loose
belts
-
t~hlen/replace.
2d.
Air
leak
In
system;
run
engine
and
open
the
prassure
tap
to
bleed
air.
Add
coolant
as
needed.
Engine
alarm
sound
pulsales.
1.
Loss
of
all.
1.
Check
dipstick,
look
for
all
leaks
at
all
filter
and
at
all
drein
hose
conneelion.
2.
011
pressure
switch.
2.
Replace
all
pressure
swllch.
I
Engine
alarm
sounds
continuously.
1.
Engine
coolant.
1.
Check
engine
coolant
level.
2.
High
temperature
switch
opens
at
.
2.
Check
for
satisfactmy
operation
wllh
switch
bypassed,
too
Iowa
temperature.
check
wllh
ohmmeter,
replace
If
faulty.
Exhaust
smoke
problems
1.
Blue
smoke.
1.
Incorrecl
grade
of
engine
oil.
la.
Crankcase
Is
overtilled
with
engine
all
(oil
Is
blowing
out
through
the
eXhaust).
2.
White
smoke.
2.
Engine
Is
running
cold.
2a.
Faulty
injeelor
or
Incorreci
injector
timing.
3.
Black
smoke.
S.
Improper
grade
of
fuel.
3a.
Fuel
bum
incomplete
due
to
high
back-pressure
in
exhaust
or
".
Insufficient
air
for
proper
combustion
(check
for
reslrlctlons
In
exhaust
system;
check
air
Intake).
3b.
Improperly
timed
injectors
or
valves,
or
poor
compreSSion
.
3
••
Lack
of
air
-
check
air
Intake
.
Check
for
proper
ventilation.
3d.
Overload.
Engines
&
Generators
29