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TROUBLESHOOTING GUIDE 3.0 KW BPMG
PROBLEM
Blue Exhausl Smoke Discharge
from the Engine
Black exhaust smoke Discharge
from the Engine
Poor performance
at generator speed
Starter stays energized
after start
Unit starts and runs
at Idle speed
Note:
MPU voltages to PC board:
Cranking: 1.5 - 2.0 VAC
Running: 4.0 - 5.0 VAC
(2200 rpm)
PROBABLE CAUSE
1. Lube oil is diluted.
2. High lube oil level.
3. Crankcase breather hose is clogged.
4. Valves are worn or adjusted incorrectly.
5. Piston rings are worn or unseated.
1. Dirty flame arrester.
2. Faulty carburetor.
3. Idle mixture jet too rich.
4. Accelerator diaphragm leaking.
5. Valves are worn or incorrectly adjusted.
6. Piston rings are worn or unseated.
1. Contaminates in carburetor.
2. Faulty fuel pump/contaminated.
3. Electronic governor controller needs
adjustment.
1. Faulty MPU suspected. Check MPU.
2. Faulty starter solenoid.
1. Check MPU signal. 1.5 - 2.0 VAC cranking.
2. Faulty overspeed board.
.... WESTERBEKE
Engines
&
Generators
27
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