Engine Troubleshooting - Westerbeke 3.5 SBCG Operator's Manual

ENGINE TROUBLESHOOTING
The following troubleshooting chart describes certain problems
and causes relating to engine service. Also note there is a
Diagnostic Troubleshooting section that follows.
Problem
Engine does not crank.
Engine cranks, does not start
(engine will crank 8 seconds)
Engine starts, runs and the shuts down.
Engine hunts.
Engine misfires/back firing.
Engine overheats/engine temp LED is illuminated.
Exhaust temp LED is illuminated.
Low oil pressure/oil pressure LED is illuminated.
No DC charge to starting battery.
Engine cranks, stops.
Check engine LED comes on.
Note:
When servicing the engine/generator, the main circuit
breaker (control panel) disconnects all AC power and can be
switched off and reset manually.
Possible Cause
1. DC panel breaker OFF.
2.DC battery OFF.
3.K2 relay faulty.
4.Starter solenoid faulty.
5.DC battery low/dead.
6. Faulty starter solenoid.
7. Water filled cylinder.
1.Fuel starvation.
2.Air in fuel system.
3.Fouled spark plugs.
4.Faulty ignition coil.
1.Fuel starvation.
2.Air in fuel system.
3 .. Faulty shutdown switch/sensor.
4. Faulty fuel pump.
1.Air in fuel system.
2.Faulty fuel pump.
3.Low octane fuel (lower than 89).
4.Faulty MAG pick-up.
1.Low octane fuel (lower than 89).
2.Dirty air intake screen screen.
3.High tension ignition wires.
4. Flywheel loose.
5. Exhaust restriction.
6.Worn/fouled spark plug.
7 .Faulty ignition module.
1. Raw water coolant flow obstruction.
2.Coolant level low.
3. Faulty impeller.
4.Pump belt loose/broken.
5.0bstructed by-pass hose.
6.Stuck thermostat.
1.Loss of coolant flow/faulty pump.
2.Faulty exhaust temperature switch.
1.0illevellow.
2.Faulty oil pressure sendor.
3.Faulty oil pressure switch.
4.011 viscosity incorrect.
1.Circuit fuse faulty/blown.
2.Faulty circuit connection.
3.Faulty regulator.
1.Data Log needed to determine cause.
2.0xygen Sensor.
3.Low charge in starting battery.