Cummins ISGe3 Troubleshooting
| Engine Model: Cummins ISGe3 |
| Engine Type: 4-stroke in-line 6-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 720 cu.in (11.8 L) |
| Rated Engine Power: 380-430 Hp (281-316 kW) at 1900 rpm |
| Fuel System Type: Common rail direct injection |
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| Diesel engine hard to start or doesn't start |
Clogged fuel filter - Change filter element.
Air trapped in fuel system - Bleed air.
Dirty or faulty injection nozzles - Test injection nozzles and change if necessary.
Faulty fuel injection pump - Rebuild or change fuel pump.
Incorrect valve timing - Adjust or change timing gear.
Plugged fuel pipes - Service or change fuel pipes.
Injection timing is wrong - Check injection timing adjustment.
Worn cylinder or piston rings - Replace faulty parts.
| Engine starts but then stops |
Dirty fuel filter - Change filter element.
Fuel injection pump failure - Repair or install a new fuel pump.
Clogged air filter element - Replace air filter element.
Nozzle opening pressure is incorrect - Set up as recommended.
| Diesel shuts off while driving |
Improper fuel injection timing - Adjust as recommended.
Clogged fuel filter - Service the filter.
Engine is cold - Warm up engine as required.
Injection nozzles are jammed or clogged - Change or repair injection nozzles.
Incorrectly adjusted low idle speed - Correct low idle settings.
The valve clearance is not adjusted - Need to adjust valve clearance.
Defective fuel injection pump - Replace or rebuild injection pump.
Defective or clogged injection nozzle - Inspect nozzles and replace if necessary.
Clogged fuel lines or hoses - Service fuel hoses and lines.
Air cleaner is dirty - Air filter maintenance required.
Cylinder head gasket defective - Gasket should be replaced.
Wrong injection timing - Set the injection timing correctly.
Faulty fuel injection pump - Rebuild or replace pump.
Any of moving engine parts is worn - Replace or repair damaged components.
Clogged radiator fins or leaking radiator cap - Change cap or clean radiator.
Engine has a lack of coolant - Add coolant fluid to cooling system and also check it for leaks.
Fan belt is worn or faulty - Install new fan belt.
Engine oil level is insufficient - Fill up the oil to required level.
Leaking cylinder head gasket - Replace cylinder head gasket.
Improper injection timing - Set up as recommended.
Insufficient engine oil - Check and refill the oil.
Oil pump is defective - Check and replace if necessary.
Oil filter element clogging - Replace or service engine oil filter.
Stuck or worn relief valve - Replace or clean relief valve.
Excessive oil clearance of crankshaft bearing - Inspect and replace or repair faulty parts.
Excessive oil clearance of crankpin bearing - Check and replace or repair defective parts.
| Engine oil consumption is too high |
Oil leaks: Gaskets or seals may be damaged - Defective components must be replaced.
Improper oil viscosity - Use oil of correct viscosity.
Piston rings are stuck or worn - Replace piston rings.
Damaged valve stems or valve guides - Replace defective valves.
Worn cylinder liners or pistons - Inspect pistons and liners, fit new components as necessary.
Engine not warmed up - Engine is not warmed up to the required temperature.
Low engine oil level - Check oil level and add oil as required.
Fuel injection pump timing is not adjusted - Adjust the pump as required.
Pistons are scored or worn - Have pistons replaced.
Connecting rod is misaligned or worn - Need to align or replace the connecting rod.
Battery voltage is low - Recharge the battery.
Battery is not holding charge - Service battery or replace it.
Faulty battery terminals or disconnected cables - Check wiring and clean or replace terminals.
Battery is low or faulty - Battery needs to be recharged or replaced.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Battery power is low - Low battery charging, charge as required.
Starter motor failure - Change or repair starter.
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