Vetus DIESEL VH4.65 Operation Manual page 63

Fault finding table
5 Engine does not reach maximum rpm under load
Possible fault
Air in fuel system.
a
Fuel filter clogged with water
B
and/or contamination.
Leaking fuel supply line or fuel
C
injection line.
Faulty injector/injection pump.
d
Oil level too high.
e
Incorrect valve clearance.
f
Exhaust restricted.
g
Insufficient intake air.
h
Wrong fuel quality or contami-
i
nated fuel.
Engine overloaded.
j
Remedy
Check and bleed.
a
Check or replace.
B
Check / replace.
C
Check, replace if
d
required.
Lower level.
e
Adjust.
f
Check / clean.
g
Check.
h
Check fuel. Drain and
i
flush fuel tank. Replace
with new fuel.
Check size of propeller.
j
6 Engine overheats
Possible fault
Faulty injector/injection pump.
a
Oil level too high.
B
Oil level too low.
C
Faulty oil filter.
d
Coolant pump defective.
e
Heat exchanger dirty or clogged
f
as a result of rubber particles
from a worn impeller.
Coolant level too low.
g
Sea cock closed.
h
Raw water strainer clogged.
i
Leaking raw water intake
j
system.
Faulty thermostat.
k
Faulty impeller raw water pump.
l
Insufficient intake air.
M
Motor becomes apparantly
n
overheated as a result of faulty
temperature switch, sensor or
meter.
Troubleshooting
Remedy
Check, replace if
a
required.
Lower level.
B
Increase level.
C
Replace.
d
Check / clean.
e
Check / clean.
f
Check / top up.
g
Open.
h
Check / clean.
i
Check / replace.
j
Check / replace.
k
Check / replace.
l
Check / replace air
M
intake filter.
Check / replace.
n
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