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Northern Lights L944 Engine

Name: Northern Lights L944 Engine
Brand: Northern Lights

The Northern Lights L944 is a 3.3 L 4-cylinder turbocharged engine rated at 1800 rpm, producing up to 44.7 kW. It powers generator sets from Northern Lights, including the M944, NL944D3 and NL944T3. It holds 10 L (2.6 gal) of oil.

Also known as: Lugger L944

3.3 L

Displacement

Cylinders

1800 rpm

Rated speed

44 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ

Engine specifications

Oil capacity	10.0 L
Displacement	3.3 L
Cylinders	4
Aspiration	Turbocharged
Rated speed	1800 rpm
Gross power	44 kW

Generator sets powered by this engine

Northern Lights M944 Northern Lights NL944D3 Northern Lights NL944T3

How to read your Northern Lights engine serial & model number →

Common problems

Temperature gauge above 205° F (96° C)
Fix: Shut off the engine immediately. Use the Trouble Shooting Guide on page 25 to isolate the cause of the overheat. Allow the engine to cool and then remove the cap slowly using protective clothing. Make repairs and restart after the temperature gauge registers below 200° F (94° C). Watch the temperature gauge regularly and turn off the unit if the temperature rises above 205° F (96° C). Repeat troubleshooting.
Engine oil consumption greater during break-in
Fix: Oil consumption is greater during break-in as piston rings take time to seat. Break-In Oil Changes: Change engine oil and filter at 50 hours. Change oil and filter again at 100 hours (consult Lubricants section for oil recommendation).
Engine does not start after 3 consecutive 20-second cranks
Fix: Remove the impeller from the seawater pump. This will prevent the muffler from ﬁ lling with water and backﬁ lling the exhaust line and engine. Once the engine starts, shut if off immediately and reinstall the impeller. Restart and check the exhaust overboard outlet for gushes of water.

Compiled from service & troubleshooting documentation across every generator set that uses the Northern Lights L944.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Oil		10.0 ltr	—	250 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Common questions

What is the oil capacity of the Northern Lights L944?

The Northern Lights L944 engine has an oil capacity of 10.0 liters.

What is the displacement of the Northern Lights L944?

The Northern Lights L944 has a displacement of 3.3 liters with 4 cylinders.

Which generators use the Northern Lights L944 engine?

The Northern Lights L944 powers 3 generator set(s), including Northern Lights M944, Northern Lights NL944D3, Northern Lights NL944T3.

How often should you change the oil in the Northern Lights L944?

The Northern Lights L944 oil change interval is every 250 hours.

What is a common problem with the Northern Lights L944 engine?

A commonly reported issue on generators using the Northern Lights L944 is: Temperature gauge above 205° F (96° C). Fix: Shut off the engine immediately. Use the Trouble Shooting Guide on page 25 to isolate the cause of the overheat. Allow the engine to cool and then remove the cap slowly using protective clothing. Make repairs and restart after the temperature gauge registers below 200° F (94° C). Watch the temperature gauge regularly and turn off the unit if the temperature rises above 205° F (96° C). Repeat troubleshooting..