Mitsubishi S16R2 Troubleshooting
| Engine Model: Mitsubishi S16R2 |
| Engine Type: 4-cycle 16-cylinder V-block turbocharged liquid-cooled diesel |
| Total Displacement: 4876 cu.in (79.9 L) |
| Rated Engine Power: 1877 to 2682 Hp (1400-2000 kW) at 1500-1800 rpm |
| Fuel System Type: Direct injection |
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| Diesel hard to start or doesn't start |
Fuel filter element is dirty - Change filter element.
There is air in the fuel system - Bleed the system.
Clogged injection nozzle - Install a new kit of correctly balanced nozzles.
Damaged fuel injection pump - Repair or change injection pump.
Valve timing is improper - Adjust or change timing gear.
Fuel pipes are plugged - Clean or replace fuel pipes.
Incorrect injection timing - Adjust according to specifications.
Damaged piston rings and cylinder - Change defective components.
| Engine starts but stops suddenly |
Fuel filter element is clogged - Service or replace the filter.
Faulty fuel injection pump - Repair or replace injection pump.
Restricted intake air - Clean or replace the element.
Incorrect nozzle opening pressure - Adjust as required.
| Engine stalls during operation |
Fuel injection timing is not adjusted - Check the fuel injection pump timing adjustment.
Fuel filter plugged - Clean or change the filter.
Low coolant temperature - Normalize the temperature by warming up the engine.
Injection nozzles are burnt or jammed - Repair or change injection nozzles.
Incorrect low idle speed adjustment - Need to adjust idle speed.
Incorrect valve clearance - Adjust to proper valve clearance.
Fuel injection pump malfunction - Install a new fuel pump or repair.
Faulty fuel injection nozzles - If necessary, replace with a new nozzle.
Fuel hoses or lines are dirty - Fuel lines and hoses need to be cleaned.
Dirty air cleaner - Clean air cleaner element.
Cylinder head gasket defective - Gasket should be replaced.
Injection timing is incorrect - Set up as recommended.
Fuel injection pump failure - Replace or repair injection pump.
Any of moving engine parts is worn - Repair or replace defective components.
Defective radiator cap or clogged radiator fins - Clean radiator or change cap.
Lack of engine coolant - Fill the cooling system and check components for leaks or other faults.
Fan belt is loose or defective - Replace the fan belt.
Lack of engine oil - Fill the crankcase with engine oil.
Cylinder head gasket defective - Cylinder-head gasket replacement required.
Injection timing is wrong - Adjust according to specifications.
Low crankcase oil level - Fill crankcase to proper oil level.
Oil pump malfunction - Inspect and change as required.
Engine oil filter is plugged - Service or change engine oil filter element.
Stuck or worn relief valve - Replace or service relief valve.
Crankshaft bearing clearance is excessive - Test and replace or repair worn components.
Excessive crankpin bearing clearance - Test and replace or repair worn components.
| Engine using too much oil |
Oil leakage: Seals or gaskets are wearing excessively - Replace to repair leaks.
Improper oil viscosity - Use oil of correct viscosity.
Damaged or seized piston rings - Replace piston rings.
Valve stems or guides are damaged - Need to replace the valves.
Scuffed cylinder liners or pistons - Inspect pistons and liners, replace as required.
Low coolant temperature - Warm up engine as required.
Engine oil level is insufficient - Need to add engine oil.
Wrong setting of fuel injection pump timing - Adjust as recommended.
Pistons are broken or worn - Pistons replacement required.
Connecting rod failure or misalignment - Need to replace or align the connecting rod.
| Starter motor cranks slow |
Battery voltage is low - Battery is drained, recharge it.
Battery is draining quickly - Battery needs to be serviced or replaced.
Wires are disconnected or battery terminals are corroded - Check wiring and clean or replace terminals.
Battery is low or faulty - Recharge or change battery.
Disconnected or incorrectly connected wires - Inspect battery wires and connect correctly.
Low battery output - Battery is drained, recharge it.
Damaged starter motor - Repair or replace starter.
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