Mitsubishi S6R2 Troubleshooting
| Engine Model: Mitsubishi S6R2 |
| Engine Type: 4-cycle inline 6-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 1828.4 cu.in (29.9 L) |
| Rated Engine Power: 590-1018 Hp (440-759 kW) at 1500 rpm |
| Fuel System Type: Direct injection |
____________________________________________________________________________________
| Engine starts hard or won't start |
Clogged fuel filter - Replace the filter element.
Air in the fuel system - Air bleeding.
Clogged injection nozzle - Check injection nozzles and replace if required.
Fuel injection pump malfunctioning - Repair or install a new fuel pump.
Incorrect valve timing - Set the valve timing correctly.
Restricted fuel pipes - Service fuel pipes.
Injection timing is improper - Check injection timing adjustment.
Worn cylinder or piston rings - Replace faulty components.
| Engine starts but stops suddenly |
Fuel filter element is clogged - Replace the filter element.
Fuel injection pump is broken - Rebuild or install a new injection pump.
Plugged air filter - Service air cleaner.
Unadjusted nozzle opening pressure - Set up as recommended.
| Engine stalls after running |
Wrong setting of fuel injection pump timing - Set the fuel pump timing correctly.
Dirty fuel filter - Service or replace the filter.
Engine has not warmed up to the recommended temperature - Engine is not warmed up to the required temperature.
Stuck or clogged injection nozzle - Check injection nozzles and replace if required.
| Engine stops while idling |
Improperly adjusted low idle speed - Test and adjust.
Improper valve clearance - Check and adjust.
Damaged fuel injection pump - Replace or rebuild injection pump.
| Engine is not running at maximum power |
Defective or clogged injection nozzle - Clean or change injection nozzles.
Fuel hoses or lines clogging - Service fuel lines and hoses.
Air filter plugged - Clean air cleaner element.
Worn cylinder head gasket - Replace cylinder head gasket.
Unadjusted injection timing - Adjust as recommended.
Fuel injection pump malfunctioning - Change pump or rebuild it.
One of moving engine parts is faulty - Repair or replace defective components.
Dirty radiator fins or faulty radiator cap - Replace cap or clean radiator.
Coolant level is low - Fill radiator to proper level and check components for faults.
Fan belt is loose or defective - Install new fan belt.
Engine oil insufficient - Check oil level and add oil as required.
Cylinder head gasket is worn - Install new cylinder head gasket.
Improper injection timing - Adjust according to specifications.
Engine oil level low - Fill the crankcase with oil.
Defective oil pump - Check and replace if necessary.
Oil filter element clogged - Clean or change engine oil filter.
Stuck or defective relief valve - Change or service relief valve.
Excessive oil clearance of crankshaft bearing - Test and replace or repair worn components.
Crankpin bearing clearance is excessive - Inspect and change or repair worn components.
| Engine consuming too much oil |
External oil leaks: Damaged seals or gaskets - Change to repair leaks.
Improper oil viscosity - Use correct viscosity oil.
Worn or broken piston rings - Change piston rings.
Worn valve guides and valve stems - Valves replacement required.
Worn pistons or cylinder liners - Inspect liners and pistons, replace as necessary.
Low coolant temperature - Normalize the temperature by warming up the engine.
Lack of engine oil - Check oil level and add oil as required.
Fuel injection pump timing is not adjusted - Set it up as required.
Pistons are broken or worn - Have pistons replaced.
Misaligned or defective connecting rod - Connecting rod needs to be replaced or aligned.
Battery voltage is low - Charge the battery.
Battery runs out quickly - Service battery or replace it.
Disconnected wires or corroded battery terminals - Check battery wires and service or replace terminals.
| Starter motor is not working |
Battery is drained or worn - Recharge or change battery.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Battery capacity is low - Battery is drained, recharge it.
Starter motor is damaged - Starter needs to be changed.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Outboard Engines Technical Specifications |
