Westerbeke ATOMIC 4 Operation And Maintenance Manual page 73

Trouble
Engine will not start
(Poor compression and
otber causes)
Excessive engine tem-
perature
Engine temperature too
low
No oil pressure
Low oil pressure
Oil pressure too high
Table 6
TROUBLE SHOOTING PROCEDURES
(Cont. )
Probable Cause
Air leak around intake mani-
fold
Loose spark plugs
Loosely seating valves
Damaged cylinder head gasket
Worn or broken piston rings
or damaged cylinder walls
No water circulation
Broken or stuck thermostat
Defective gauge or tube
No oil in engine
Dirt in pressure relief
valve
Defective oil pump, leak
in oil lines or broken oil
pump drive
Too light body oil
Oil leak in pressure line
Weak or broken pressure re-
lief valve spring
Worn oil pump
Worn or loose bearings
Too heavy body oil
Stuck pressure relief valve
Dirt or obstruction in lines
-62-
Correction
- - - - - - - - - - - - - - - - - f
Check for leak by squirting oil around
intake connections. If leak is found,
tighten manifold and if necessary re-
place
g~.
__
:~cts.
Check all plugs for proper seating, gas-
ket and tightness. Replace all damaged
plugs and gaskets.
Check for broken or weak valve springs,
warped stems, carbon and gum deposits,
and insufficient tappet clearance. See
Par.
7,
Sec. VI.
Check for leaks around gasket when en-
gine is cranked. If a leak is found,
replace gasket.
Replace broken and worn rings. Check
cylinders for "out of round" and "taper"
Check for clogged water lines and re-
stricted inlets and outlets. Check for
broken or stuck thermostat. Look for
worn or damaged water pump or water
pump drive.
Replace thermostat
Replace gauge or tube
Refill with proper grade oil. See
Table 4.
Clean valve
Check oil pump and oil pump drive for
worn or broken parts. Tighten all oil
line connections.
Replace with proper weight oil. See
Table
4.
Inspect all oil lines. Tighten all
connections.
Replace spring.
Replace pump
Replace bearings
Drain oil and replace with oil of
proper weight. See Table
4.
Clean or replace valve
Drain and clean oil system. Check for
bent or flattened oil lines and re-
place where necessary.