Westerbeke 8.0 KW-60Hz SBEG Operator's Manual page 36

ENGINE TROUBLESHOOTING
PROBLEM PROBABLE CAUSE PROBLEM PROBABLE CAUSE
Engine backfires. 1. Spark plug wires are connected No DC charge to the 1. Faulty connections to
wrong. starting battery. battery charging control.
2. Incorrect timing. 2. Faulty battery charging control.
3. Engine is flooded. 3. Faulty bridge rectifier.
4.
Dirty flame arrester. 4. Faulty generator charger windings.
5. Cracked distributor cap.
Blue exhaust smoke 1. Lube oil is diluted.
6. High exhaust back-pressure.
discharged from the
2. High lube oil level.
Engine overheats. 1. Coolant loss. Pressure test
engine.
3. Crankcase breather hose is clogged.
cooling system.
4.
Valves are worn or adjusted
2. Faulty raw water pump impeller. incorrectly.
3. Belts are loose or broken.
5. Piston rings are worn
4. Raw water pump worn.
or unseated.
5. Faulty thermostat.
Low oil pressure.
1.
Low oil level.
2. Wrong SAE type oil in the engine.
Black exhaust smoke 1. Dirty flame arrester.
discharged from the
2.
Valves are worn or incorrectly
engine.
adjusted.
3. Lube oil is diluted.
3. Faulty or wrong type oil filter.
4. Relief valve is stuck.
5. Faulty oil pump.
6. Faulty engine bearings.
7. Faulty oil filter.
4. Piston rings are worn or unseated.
5. Crankcase breather hose is clogged.
Poor performance 1. Main jet clogged. Remove and clean.
at generator speed
2.
Fuel pump clogged. Remove and
replace.
High oil pressure.
1. Dirty oil or wrong SAE type oil in the
3.
Throttle body filter screen dirty.
engine.
Remove and clean.
2. Relief valve is stuck.
""" WESTERBEKE
Engines & Generators
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