Engine Troubleshooting (Chart) - Westerbeke 5.0KW BCD Operator's Manual

ENGINE TROUBLESHOOTING
The following troubleshooting table describes certain problems
relating to engine service, the probable causes of these
problems and the recommendationns to overcome these
problems.
Problem
Probable Cause
PREHEAT switch depressed: 1. Battery switch not on.
depressed: no panel indications;
fuel solenoid or electrical fuel pump
2.
Emergency stop switch off.
3.
20-Amp breaker tripped.
4.
K2 relay.
5. Loose battery connections.
START SWITCH DEPRESSED, 1. Connection to solenoid faulty.
no starter engagement.
2.
Faulty switch.
3.
Faulty solenoid.
4.
Loose battery connection.
5. Low battery.
6.
K1 relay.
Note:
The engine
s
electrical system is protected by a 20 amp
manual reset circuit breaker located on a bracket at the rear
of the engine.
Verification/Remedy
1. Check switch and/or battery connections.
2.
Reset breaker; if breaker trips again, check preheat solenoid
circuit and check circuit for shorts to ground.
3.
Check voltage at and after breaker.
4.
Check K2 relay.
5. Check (+) connection to starter solenoid and (-) connection to
engine ground stud. Check battery cable connections.
1. Check connection.
2.
Check switch with ohmmeter.
3.
Check that 12 volts are present at solenoid connection.
4.
Check battery connections.
5. Check battery charge state.
6.
Check K1 relay.
START SWITCH is depressed; panel 1. Poor connections to fuel solenoid. 1. Check connections.
indications OK; starter solenoid OK
fuel solenoid not functioning.
2.
Defective fuel solenoid.
2.
Check that 12 volts are present at the (+) connection on the
fuel run solenoid.
Generator engine cranks, but does not 1. Faulty fueling system. 1. Check that fuel valves are open.
start, fuel solenoid energized. 1a. Switch to combine vehicle and start batteries.
1 b. Replace batteries.
1 c. Check fuel lift pump.
1 d. Check inlet fuel filter.
2.
Preheat solenoid faulty.
2.
Check solenoid.
Battery runs down. 1. Oil Pressure switch. 1. Observe if gauges and panel lights are activated when engine
is not running. Test the oil pressure switch.
2.
High resistance leak to ground.
2.
Check wiring. Insert sensitive (0 - .25 amp) meter in battery
lines. (Do not start engine.) Remove connections and replace
after short is located.
3.
Low resistance leak.
3.
Check all wires for temperature rise to locate the fault.
4.
Poor battery connections. 4. Check cable connections at battery for loose connections or
corrosion.
Battery not charging 1. DC charge circuit faulty. 1. Perform DC voltage check of generator charging circuit.
2.
30 Amp fuse blown.
2.
Check/replace 'fuse.
Generator engine stops. 1. Fuel feed pump strainer is dirty. 1. Clean strainer (32 KW only).
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 feed strainer.
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 water from fuel tank(s); change filters and
bleed fuel system
7. Air intake obstruction. 7. Check air intake.
Engines
&
Generators
29