Engine Troubleshooting - Miller Trailblazer 330 Diesel Owner's Manual

11-4. Engine Troubleshooting

Trouble
Engine does not crank.
Engine cranks but does not start.
Engine starts but stops when Engine
Control switch S2 returns to Auto-
Speed position.
Engine stopped during normal
operation.
Battery discharges between uses.
Engine does not return to idle speed
when load is removed with Engine
Control switch in Auto-Speed position.
Engine does not remain at weld/power
speed when power or weld load is ap-
plied with Engine Control switch in Au-
to-Speed position.
Engine exhaust smoke black when
unit is under load.
Supplementary protector F1 or F2 may be open. Wait and retry.
Check battery voltage.
Check battery connections; clean and tighten if necessary.
Check Engine Control switch and engine wiring harness connections.
Have Factory Authorized Service Agent check CR6 control relay and starter.
Check fuel level and front panel fault indicators (see Section 6-1).
Glow plug circuit breaker CB4 may be open (see Section 10-6). Wait and retry.
Service inline fuel strainer and fuel filter (see Section 10-2).
Check battery and replace if necessary.
Check engine charging system according to engine manual.
Have Factory Authorized Service Agent check Engine Control Unit (ECU) fault codes and speed
actuator.
Have Factory Authorized Service Agent check glow plug relay CR1.
Check oil level (see Section 5-5) and front panel fault indicators (see Section 6-1). Engine will start if
oil pressure is too low and will shut off if no pressure is present.
Check coolant level and fan belt (see Section 5-5 and engine manual), and check front panel fault in-
dicators (see Section 6-1). Engine will not start if engine temperature is too high.
Have Factory Authorized Service Agent check low oil pressure shutdown switch S3 and engine
water temperature sensor.
Check fuel level and front panel fault indicators (see Section 6-1).
Check oil level (see Section 5-5) and front panel fault indicators (see Section 6-1).
Check coolant level and fan belt (see Section 5-5 and engine manual), and check front panel fault in-
dicators (see Section 6-1). Engine stops if engine temperature is too high.
Have Factory Authorized Service Agent check low oil pressure shutdown switch S3 and engine
water temperature sensor.
Periodically recharge battery (approximately every 3 months).
Replace battery.
Check alternator voltage according to engine manual.
Remove all weld and generator power loads.
Have engine Factory Authorized Service Agent check engine and wiring.
Have engine Factory Authorized Service Agent check engine and wiring.
Replace air cleaner. Replace fuel filter.
Always check unit before applying power. See Pre-Power Checks.
Remedy
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