Installation manual
ENGINE
TROUBLESHOOTING
The
following
troubleshooting
chart
provides
information
based
upon
certain
problem
indicators,
the
probable
causes
of
these
problems,
and
the
recommendations
to
overcome
them.
1.
Engine
will
not
start
Problem
Probable
Cause
Fuel
supply
failure
If
squirting
cannot
be
heard:
(check
by
cranking
engine
1.
No
fuel
in
tank.
and
listening
for
the
2.
Vent
hole
in
tank
cap
plugged.
characteristic
squirting
in
3.
Fuel
filter
clogged.
the
fuel
injector).
4.
Faulty
injector
nozzle.
5.
Faulty
injection
pump.
6.
Fuel
line
blocked.
7.
Broken
fuel
line
or
leaking
connection.
If
squirting
can
be
heard:
1.
Starting
fuel
button
not
pulled.
2.
Gasoline
instead
of
diesel
in
tank.
3.
Air
intake
blocked.
Poor
compression
1.
Automatic
decompression
device
malfunction.
2.
Incorrect
valve
clearance.
3.
Valves
not
seating
properly.
4.
Cylinder
head
loose.
5.
Piston
rings
stuck
in
grooves.
6.
Worn
cylinder
and
piston.
7.
Rusty
exhaust
valve.
8.
Valves
sticking.
Difficult
to
crank
the
engine
1.
Lube
oil
too
thick.
2.
Bearings
seized.
3.
Piston
seized.
2.
Engine
starts
but
fires
intermittently
or
soon
stops
Faulty
fuel
supply
1.
Fuel
filter
clogged.
2.
Water
in
fuel.
3.
Faulty
injector
nozzle.
4.
Faulty
injection
pump.
5.
Fuel
line
clogged.
6.
Fuel
lines
or
connections
leak.
Faulty
air
intake
and/or
1.
Restrictedlblocked
exhaust
system.
exhaust
system.
2.
Restrictedlblocked
air
intake.
Poor
Compression
See
Poor
Compression
under
Engine
will
not
Start.
Remedy
1.
Fill
tank.
2.
Replace
cap.
3.
Replace
filter.
4.
Check/replace
nozzle.
5.
Check/repair/replace
pump.
6.
Check
fuel
lines
and
remove
blockage.
7.
Replace
fuellineltighten
connections.
1.
Pull
button.
2.
Drain
gasoline,
flush
system,
fill
with
diesel.
3.
Check
system
for
blockage.
1.
CheCk/replace
automatic
decompression
device.
2.
Adjust
valve
clearance.
3.
CheCk/repair/replace
valves.
4.
lighten
cylinder
head
nuts.
5.
Check
rings
and
clean
the
piston.
6.
Overhaul
the
engine.
7.
Spray
lubricating
oil
into
the
cylinder,
activate
the
automatic
decompression
device,
then
start.
8.
Free
valves.
1.
Change
to
correct
viscosity.
2.
Overhaul
the
engine.
3.
Overhaul
the
engine.
1.
Replace
filter.
2.
Drain
fuel;
fill
with
clean
fuel.
3.
CheCk/replace
nozzle.
4.
CheCk/repair/replace
pump.
5.
Check
the
fuel
lines
and
remove
the
blockage.
6.
Replace
fuellineltighten
connections.
1.
Check/clean
exhaust
system.
2.
Check/clean
air
intake
system.
(continued)
Engines &
Generators
39