Cummins/Onan 1.4EGSAA Engine Engine
The Cummins/Onan 1.4EGSAA is a 1.4 L 1-cylinder natural engine rated at 3600 rpm, producing up to 1400 kW. It powers generator sets from Cummins/Onan, including the 1.4 EGSAA. It holds 0.95 L (0.3 gal) of oil and 0.9 L (0.2 gal) of coolant.
Also known as: Onan 1.4EGSAA
Engine specifications
| Oil capacity | 0.95 L |
|---|
| Coolant capacity | 0.9 L |
|---|
| Displacement | 1.4 L |
|---|
| Cylinders | 1 |
|---|
| Aspiration | Natural |
|---|
| Rated speed | 3600 rpm |
|---|
| Gross power | 1400 kW |
|---|
Generator sets powered by this engine
1Common problems
7- UNIT RUNS THEN STOPS
Fix: Add fuel. Add oil. Reduce oil level. - UNIT RUNS BUT SURGES
Fix: Add fuel. Add oil. Reduce oil level. - NO AC OUTPUT VOLTAGE
Cause: Open AC circuit breaker due to an overload
Fix: Remove all loads, re-set circuit breaker, check tools or appliances being used for defects. Do not exceed generator set rated load specifications. - FAILS TO CRANK (ELECTRIC START MODELS)
Cause: Low Battery, Bad battery connection, Oil is too heavy, Load is connected
Fix: Check battery electrolyte level and charge. Clean and tighten all battery and cable connections. Replace with lighter oil. Always disconnect load while starting. - EXHAUSTING BLACK SMOKE
Cause: Open DC circuit breaker due to an overload
Fix: Remove all loads, reset circuit breaker, check for an overload or short circuit. Do not exceed generator set rated load specifications. - ENGINE WONT START
Cause: Loose or worn spark plug lead, Faulty spark plug, Dirty fuel filter or generator set at too steep of an angle, Governor out of adjustment or lean fuel mix
Fix: Check spark plug lead connection. Remove and clean or replace spark plug. Check fuel filter and generator set angle. Contact an Onan service center. - CRANKS SLOWLY (ELECTRIC START MODELS)
Cause: Choke closed, Dirty air filter, Rich fuel mixture
Fix: Open choke. Clean or replace air filter. Contact an Onan service center.
Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan 1.4EGSAA.
Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | Air Filter | | — | 100 hr | find |
| Fuel filter | Fuel Filter | | — | 100 hr | find |
| Oil filter | Oil Filter | | — | 100 hr | find |
| Belt | Belt | | — | 500 hr | find |
| Oil | Engine Oil | 500.0 hours | — | 500 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 Cummins/Onan 1.4EGSAA?
The Cummins/Onan 1.4EGSAA engine has an oil capacity of 0.95 liters.
What is the displacement of the Cummins/Onan 1.4EGSAA?
The Cummins/Onan 1.4EGSAA has a displacement of 1.4 liters with 1 cylinders.
Which generators use the Cummins/Onan 1.4EGSAA engine?
The Cummins/Onan 1.4EGSAA powers 1 generator set(s), including Cummins/Onan 1.4 EGSAA.
How often should you change the oil in the Cummins/Onan 1.4EGSAA?
The Cummins/Onan 1.4EGSAA oil change interval is every 500 hours.
What is a common problem with the Cummins/Onan 1.4EGSAA engine?
A commonly reported issue on generators using the Cummins/Onan 1.4EGSAA is: UNIT RUNS THEN STOPS. Fix: Add fuel. Add oil. Reduce oil level..