Westerbeke 20B TWO Installationshandbuch PDF herunterladen (Seite 45)

ENGINE

TROUBLESHOOTING

Problem

Probable

Cause

Verification/Remedy

Engine

slows

and

stops.

1.

Fuel

lift

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

lift

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

water

from

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

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.

Engine

alarm

sound

pulsates.

1.

Loss

of

oil.

1.

Check

dipstick,

look

for

oil

leaks

at

oil

filter

and

at

oil

drain

hose

connection.

2.

Oil

pressure

switch.

2.

Replace

oil

pressure

switch.

Engine

alarm

sounds

continuously.

1.

Engine

coolant.

1.

Check

engine

coolant

level.

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

smoke

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.

Check

for

proper

ventilation.

3d.

Overload.

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