Cummins ISGe5 Troubleshooting
| Engine Model: Cummins ISGe5 |
| Engine Type: 4-stroke in-line 6-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 720 cu.in (11.8 L) |
| Rated Engine Power: 400-510 Hp (294-380 kW) at 2300 rpm |
| Fuel System Type: Common rail direct injection |
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| Engine difficult to start or won't start |
Dirty fuel filter - Filter maintenance required.
Air trapped in fuel system - Bleed air.
Faulty or dirty injection nozzles - Check and replace nozzles if required.
Damaged fuel injection pump - Install a new fuel pump or repair.
Valve timing is incorrect - Adjust or replace timing gear.
Clogged fuel pipes - Clean or change fuel pipes.
Unadjusted injection timing - Adjust according to specifications.
Excessive wear of piston rings and cylinder - Replace faulty parts.
| Diesel starts but immediately stops |
Dirty fuel filter - Change the filter element.
Fuel injection pump is defective - Install a new pump or rebuild.
Plugged air cleaner - Clean or change the filter.
Improper nozzle opening pressure - Set it correctly.
| Engine stops running suddenly |
Incorrect adjustment of fuel injection pump timing - Adjust according to specifications.
Fuel filter element is dirty - Clean or change the filter.
Low coolant temperature - Warm up to required temperature.
Injection nozzles are jammed or clogged - Clean or change injection nozzles.
Low idle speed setting is not correct - Correct low idle adjustment.
The valve clearance is incorrect - Check and adjust as required.
Fuel injection pump malfunctioning - Replace injection pump or repair it.
Defective injection nozzle - Inspect nozzles and replace if necessary.
Dirt in the fuel lines or hoses - Clean fuel lines and hoses.
Air filter element clogged - Clean or change the filter.
Cylinder-head gasket is leaking - Install a new gasket.
Injection timing is out of adjustment - Set the injection timing correctly.
Fuel injection pump is defective - Install a new fuel pump or repair.
One of moving engine components has failed - Change or repair damaged parts.
Clogged radiator core or leaking radiator cap - Install new cap or clean radiator.
Not enough coolant - Add coolant fluid and inspect the cooling system for leaks.
Broken or loose fan belt - Change as required.
Engine oil insufficient - Need to add engine oil.
Leaking cylinder head gasket - Replace cylinder head gasket.
Improper injection timing - Use correct injection timing adjustment.
Engine oil insufficient - Need to add oil.
Oil pump malfunction - Install a new pump.
Engine oil filter is plugged - Service or change engine oil filter element.
Stuck or worn relief valve - Change or clean relief valve.
Clearance of crankshaft bearing is excessive - Check and replace or repair defective parts.
Excessive crankpin bearing clearance - Inspect and replace or repair faulty components.
| Engine oil consumption is too high |
External oil leaks: Gaskets or seals can be faulty - Replace to repair leaks.
Incorrect oil viscosity - Use proper viscosity oil.
Piston rings are seized or worn - Install new piston rings.
Worn valve guides and valve stems - Replace defective valves.
Scuffed cylinder liners or pistons - Check pistons and liners, replace as required.
Low coolant temperature - Normalize the temperature by warming up the engine.
Lack of engine oil - Check and refill engine oil.
Timing of fuel injection pump is incorrect - Set it up as required.
Pistons are worn or scored - Have pistons replaced.
Connecting rod is worn or misaligned - Need to align or replace the connecting rod.
Battery voltage is low - Battery needs to be recharged.
Battery drains quickly - Service charging system or install new battery.
Disconnected battery cables or bad terminals - Connect wires properly or change terminals.
Battery is drained or defective - Charge or change the battery.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Battery voltage is low - Battery needs to be recharged.
Starter motor failing - Repair or replace starter.
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