Engine Troubleshooting (Chart) - Westerbeke 7.6 kw EDT Operator's Manual

ENGINE TROUBLESHOOTING
Note:
The engine's DC electrical system
is
protected by a 20 amp
rocker type reset circuit breaker mounted on the control panel.
' .. L.CD display faultst
Problem Probable Cause Verillcatlon/Remedy
START BUTTON depressed 1.
Battery Switch not on.
1. Check switch and/or battery connections.
no panellndlcatiins.
2. Circuit breaker tripped/off. 2. Reset breaker; if breaker trips again, check preheat solenoid circuit and
check circuit for shorts to ground.
3. Loose battery connections. 3. Check (+) connection to starter solenoid and (-) connectlon to engine
ground stud. Check battery cable connections.
START switch depressed 1. Connection to solenoid faulty, 1. Check connection.
no starier engagement.
2. Faulty solenoid.
2. Check that 12 volts are present at the solenoid connection.
3. Loose battery connection. 3. Check battery connections.
4. Low battery. 4. Check battery ehargs state.
5. K1 Relay
5. Check Kl relay.
START switch is depressed; panel
1.
Poor connections to actuator.
1.
Check connections.
indicat!ons OK; starter solenoid OK
actuator not functioning.
2. Defective actuator.
2. Remove and check actuator.
Generator engine cranks but does not
1.
Faulty Fueling system.
1.
Check that the valves are open.
start, actuator energized. la. Switch
to
combine house and start batteries.
NDTE: There is an 8-10 sec crank cycle. lb. Replace batteries.
If the engine does not start, the cycle le. Check fuel lift pump.
will terminate and
a
underspeed fault will ld. Change Inlet fuel filter.
d/splayon the LCD display screen.
2. Preheat solenoid faulty. 2. Chech solenoid.
Battery runs down. 1. High resistance leak to ground. 1. Check Wiring. Insert sensitive (0 - .25 amp) meter in battery lines.
Do not start engine. Remove connections and replace after short is
located.
2. Low resistance leak. 2. Check all wires for temperature rise to locate the fault.
3. Poor battery connections. 3. Check cable connections at battery for loose connections,
corrosion.
4. DC Alternator not charging. 4. Check connections, check bIllt tension, test alternator.
See DC ELECTRICAL SYSTEM/ALTERNATOR in ths manual.
Battery not charging 1. DC charge circuit faulty. 1. Perforrn DC voltage check of generator charging circuit.
See OC ELECTRICAL SYSTEM/ALTERNATOR in ths manual.
2. Alternator drive. 2. Check drive belt tension. Alternator should turn freely. Check for loose
connections. Check output with voltmeter. Ensure 12 valls are present
at the Exe terminal.
Generator engine stops.
1.
Switches and/orwiring loose. 1. Inspect wiring for short circuits and loose connections
(Fault display under speed) Inspect switches for proper operation.
NOTE: There Is an 8-10 sec crank cycle. ffthe
2. Fuel starvation. 2. Check fuel supply, fuel valves, fuel feed
~trainer.
engine does not start, the cycle wllf termInate
ana a underspeed fault wiff display on the LCD
3. 20 Amp cireuit breaker tripping.
3. Check for High DC amperage draw during operatIon. Ensure breaker is
display screen.
(LCD display blank)
not overly sensitive to heat which would cause tripping.
4. Exhaust system is restricted. 4 Check for blockage or collapsed muffler.
5. Water in fuel.
5. Pump water from fuel tank(s), change filters and bleed fuel system.
6. Air intake obstruction. 6. Check air intake filter cartridge.
Engine starts, runs, and shuts down. 1. Faulty oil pressure sensor 1. Check oil pressure sensor.
2. Water temperature sensor. 2. Check water temperature sensor.
3. Faulty exhaust temperature switch. 3. Check temperature switch.
Exhaust smoking problems 1. Blue smoke. 1. Incorrect grade of engine oil.
la. Crankcase is overfilled with engine all (oil is blowing out through the
exhaust).
2. White smoke. 2. Engine is running cold.
2a. Faulty injector or Incorrect injector timing.
3. White smoke.
3. Improper grade of fuel
Of
possible generator overload.
3a. Fuel burn Incomplete due to high back pressure in exhaust or
Insufficient air for proper combustion (Check for restrictions In exhaust
system; check ajr intake.).
3b. lmproperti timed injectors or valves or poor compression.
3e. Lack of air - check air intake and air filter. Check for proper ventilation .
--"-
.
.
.....v- WESTERBEKE
Engines & Generators
29