Engine Troubleshooting Guide - Westerbeke 8.0 KW-60Hz SBEG Operator's Manual

ENGINE TROUBLESHOOTING
The following troubleshooting tables are based upon certain
engine problem indicators and the most likely causes of the
problems.
When troubleshooting indicates an electrical problem, see the
El.ECfRICAL SYSTEM WIRING DIAGRAM as these may
reveal other possible causes of the problem which are not
listed below.
PROBLEM PROBABLE CAUSE
Engine does not 1. Battery is low or dead.
crank. Z. Loose battery connections.
*3. Faulty wire connections.
*4. Faulty start switch.
*5. Faulty starter solenoid.
6. Raw water filled cylinders.
7. Filters are clogged by contaminated
fuel.
Engine cranks but 1. Out of fuel.
fails to start.
Z. Engine is flooded.
3. Fuel pump inoperative.
4. Worn or faulty spark plugs.
5. High tension wires grounding
(wet system).
6.
Faulty ignition coil.
7.
Faulty distributor.
*8.
Faulty wire connections.
9. Low engine compression.
10. Air in the fuel system.
See BLEEDING THE FUEL SYSTEM
Engine starts, runs *1. Faulty shutdown switch.
but then shuts (oil pressure, coolant or exhaust
down. temperature).
Z. High engine water or exhaust
temperature.
*3. Oirty fuellwater separator filter.
4. Low oil level in sump.
5. Faulty fuel pump
6. Faulty engine temperature sensor.
7. Air in the fuel system.
See BLEEDING THE FUEL SYSTEM
NOTE:
The engines control system (electrical system) is
protected by a
8
Ampere manual fuse located on the control
panel. The generator has an AC circuit breaker at the control
panel which should be in the off position when peiforming
troubleshooting.
PROBLEM
PROBABLE CAUSE
Engine starts, runs 8. Fuel line restriction.
and then shuts down
9.
Mechanical check valve at the fuel
supply is faulty
10. Throttle plate binding.
11. Faulty wire connection.
*lZ. AC generator overload.
13. High exhaust pressure.
Engine hunts. 1. Low battery voltage.
Z. Generator is overloaded.
3. Cracked distributor cap.
4. Faulty high tension wires.
5. Faulty fuel pump.
6. High exhaust back·pressure.
7.
Valves are out of adjustment.
8. Dirty fuel filters.
Engine misfires. 1. Poor quality fuel.
Z. Incorrect timing.
3. Dirty flame arrester.
4. Cracked distributor cap.
5. Faulty ignition wires.
6. Spark plugs are worn.
7.
High exhaust back-pressure.
8. Valve clearances are incorrect.
• Refer to the ELECfRICAL TROUBLESHOOTING guide in this manual for detailed testing of these electrical connections.
Engines & Generators
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