Westerbeke 65A-FOUR Operator's Manual page 35

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