The Mitsubishi SIiI2R is an engine, producing up to 1350 kW. It powers generator sets from Mitsubishi.
Also known as: MITSUBISHI SIiI2R
| Gross power | 1350 kW |
|---|
| Symptom | Cause | Remedy |
|---|---|---|
| Starter will not crank engine or cranks slowly, resulting in a failure of engine to start | Repair or replace. Battery — starter switch circuit open | |
| Starter will crank engine, but engine will not start | Refuel. Consult Mitsubishi dealer. | |
| Engine lacks power | Incorrect grade of oil, Wrong type of fuel, Insufficient air (air cleaner clogged), Engine overcooled, Fuel feed pump gauze filter clogged | |
| Engine overheating | Valve clearance incorrect, Injection pump defective, Injection nozzles defective, Injection timing incorrect, Compression pressure low (cylinders and pistons worn) | |
| White or blue exhaust smoke | Too much oil in crankcase, Oil viscosity too low | Use radiator cover, or clean, test and replace thermostat. Fill only to correct level on gauge. Refill with correct viscosity of oil. |
| Engine overcooled | Thermostat defective (no water temperature rise) | Use radiator cover, or clean, test and replace thermostat. |
| Injection timing incorrect, Compression pressure low | Readjust. Disassemble and replace parts. Change. | |
| Black or gray exhaust smoke | Wrong type of fuel (low cetane number), Vaive clearance incorrect, Injection pump defective, Compression pressure low, Insufficient air (air cleaner clogged) | Refill with correct type of fuel. Readjust. Readjust or replace. Disassemble and replace parts. Clean or change element. |
| High fuel consumption | Readjust or replace. Disassemble and replace parts. Change. Refill with correct type of fuel. Disassemble and replace parts. Clean or change air cleaner element. Check turbocharger. | |
| High oil consumption | Too high oil level in crankcase, Incorrect grade of oil, Oil leaks, Cylinders and piston rings worn | Maintain oil level in correct range on gauge. Use recommended type and SAE number of oil. Retighten or replace. Disassemble and replace parts. |
| Low oil pressure, Lack of oil | Oil viscosity too low, Oil filter clogged, Oil pump defective, Oil pressure regulating valve defective, Oil pressure sensor circuit defective | Refill up to level. Refill with correct viscosity of oil. Replace element. Readjust, replace or clean. Readjust or replace. |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
Compiled from service & troubleshooting documentation across every generator set that uses the Mitsubishi SIiI2R.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Clean element when indicator shows RED. | — | 300089 hr | find | |
| Fuel filter | Change fuel filter when oil filter alarm lamp glows. | — | 1000 hr | find | |
| Oil filter | Disassemble filter and check for metal particles trapped in it. If such particles are found, consult your Mitsubishi dealer. | — | 250 hr | find | |
| Belt | Check tension with tum-buckle. Push belt inward with a thumb pressure of 10 to 15 kgf (22 to 33 Ibf) exerted midway between pulleys. Slack at this point should be 10 to 15 mm (0.4 to 0.6 in.). Adjust tension with tum-buckle. | — | 250 hr | find | |
| Coolant | Change coolant every 1 year. Use clean water that is soft, or as free as possible from scale forming minerals. | — | 365 hr | ||
| Oil | Change oil when engine is still hot shortly after operation. | — | 250 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Mitsubishi SIiI2R powers 1 generator set(s), including Mitsubishi SIiI2R.
The Mitsubishi SIiI2R oil change interval is every 250 hours.
A commonly reported issue on generators using the Mitsubishi SIiI2R is: White or blue exhaust smoke. Cause: Too much oil in crankcase, Oil viscosity too low. Fix: Use radiator cover, or clean, test and replace thermostat. Fill only to correct level on gauge. Refill with correct viscosity of oil..