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I
ENGINE TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
PROBLEM
PROBABLE CAUSE
Engine backfires.
1. Spark plug wires are connected wrong.
No DC charge to the
1. Faulty 30 amp buss fuse or 30 amp
2. Incorrect timing.
s~rtlng
battery.
AGM fuse. Ref. DC wiring diagram.
3. Dirty flame arrester.
4. Cracked distributor cap.
5. High exhaust back-pressure.
2. Faulty connections to
battery charging control.
3. Faultybattery charging control.
4. Faulty bridge rectifie.
Engine overheats.
1.
Coolant loss. Pressure test cooling
system.
2. Faulty raw water pump impeller.
3. Belts are loose or broken.
4. Raw water pump worn.
5. Faulty thermostat.
5. Faulty generator charger windings.
Blue exhaust smoke
1. Lube oil is diluted.
discharge from the
2. High lube oil level.
engine.
3. Crankcase breather hose is clogged.
4. Valttes are worn or adjusted
incorrectly.
Low oil pressure.
1. Low oil level.
5. Piston riogs are worri
2. Wrong SAE type oil in the engine.
or unseated.·
3. Wrong type oil filter.
Black exhaust smoke
1. Dirty flame arrester.
4. Relief valve Is stuck.
· discharge from the
2. Lube oil is diluted.
5. Faulty oil pump.
6. Faulty engine bearings.
engine.
3. Valves are worn or incorrectly
adjusted.
7.
Faulty oil filter.
4. Piston rings are worn or unseated.
High
~II
pressure.
1. Dirty oil or wrong SAE type oil in the
engine.
,
·
2. Relief valve is stuck:
5. Cankcase breather hose is clogged.
Poor Performance
1. Fuel injector not functioning properly.
at Qenerator speed.
· 2. Fuel pump clogged. Remove and
replace.
;-;~'
3. Throttle body filter scre.en dirty.
Remove and clean.
ENGINE TROUBLESHOOTING/SOFTWARE DIAGNOSTICS
DIAGNOSTIC SOFTWARE KIT #05541 0
This Diagnostic Software Kit is designed to aide the
technician in monitoring and troubleshooting the generator's
operation and ECU functions (ECIO Software).
The Diagnostic Software will run on WINDOWS 98 and
newer based operating systems. These must have a minimum
of 128 megabytes of RAM and the communication cable
supplied with the kit plugs into a serial connection or an
adapter to convert from serial to USB. When using serial to
USB adapters, the communication port that the adapter is
using MUST be known in order to configure the Diagnostic
Software.
The Westerbeke communications cable provided in the kit
'is unique to this Diagnostic Software and must be used or
otherwise damage to 'the ECU will occur if any other
communications cable is substituted.
The Diagnostic SoftWare is for monitoring ONLY. It is read
only, so none of the values can be changed.
.
e~ro»GJUNE
REMOTE PANEL SHOWN
TEST PROCEDURE FOR DATA LOGGING USING THE
GASOLINE DIAGNOSTIC SOFTWARE PC INTERFACE
DIAGNOSTIC SOFIWARE IS A VALUABLE TOOL IN
SOLVING ENGINE PROBLEMS.
IT SHOULD NOT
REPLACE BASIC 'fROUBLESHOOTING OR COMMON
SENSE.
/...,-IWEsT'ERBEKE
) Engines
&
Generato,.
28
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