Engine Troubleshooting - Westerbeke 4.5 KW BCGTC - 60 Hz Operator's Manual

ENGINE TROUBLESHOOTING
The following troubleshooting tables are based upon certain
engine problem indicators and the most likely causes of the
problems.
PROBLEM PROBABLE CAUSE
Engine does not 1. Voltage drop at starter solenoid
crank. terminal.
2. Engine 20A circuit breaker has
tripped.
3.
Battery is low or dead.
4.
Loose battery connections.
5.
Faulty wire connection.
6. Faulty start switch.
7. Faulty start relay (K1).
8.
Faulty starter solenoid.
9.
Raw water filled cylinders.
Engine cranks but
1.
Out of fuel.
fails to start.
2.
Engine is flooded.
a. Carburetor float needle valve open
or damaged. Clean or replace the
needle valve.
b. Float in carburetor is leaking.
Repair or replace float.
c. Float chamber gasket damaged or
securing screws are loose. Replace
gasket and/or tighten screws.
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 connection.
9.
Faulty overspeed circuit board.
Replace.
10.
Faulty run relay (K2).
11.
Timing belt.
12.
No engine compression.
13.
Faulty idle adjustment.
When troubleshooting indicates an electrical problem, see the
DC Electrical System Wiring Diagram and Schematic, as
they may reveal other possible causes of problems not listed
below.
PROBLEM PROBABLE CAUSE
Engine starts, runs 1. Faulty shutdown switch,
and then shuts (oil pressure, water or exhaust
down. temperature).
2.
High engine water or exhaust
temperature.
3.
Dirty fuel/water separator filter.
4.
Mechanical check valve at the fuel
supply faulty.
5.
Low oil level in sump.
6. Faulty fuel pump.
7. Faulty engine temperature
sensor.
Engine starts, runs 1. Fuel line restriction.
but does not come
2. Mechanical check valve at the
up to speed.
fuel supply is faulty.
3. Throttle plate binding.
4.
Faulty fuel pump.
5. Faulty wire connection.
6.
Faulty engine temperature
sensor.
7. AC generator overload.
8. High exhaust pressure.
Engine hunts. 1. Low battery voltage.
2. 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.
Engines & Generators
29