Cummins ISM 330 Troubleshooting
| Engine Model: Cummins ISM-330 |
| Engine Type: 4-cycle 6-cylinder CELECT electronic fuel-injection liquid-cooled diesel |
| Total Displacement: 661 cu.in (10.8 L) |
| Rated Engine Power: 330 Hp (246 kW) at 2000 rpm |
| Aspiration Type: Turbocharged |
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| Engine starts up hard or doesn't start |
Clogged fuel filter - Change filter element.
Air in the fuel system - Air bleeding.
Faulty fuel injection nozzles - Test injection nozzles and change if necessary.
Fuel injection pump is defective - Repair or change injection pump.
Valve timing is wrong - Correct or change timing gear.
Dirty fuel pipes - Clean or replace fuel pipes.
Injection timing is out of adjustment - Adjust according to specifications.
Damaged piston rings and cylinder - Change faulty components.
| Diesel starts but stalls immediately |
Fuel filter plugging - Clean the filter element.
Damaged fuel injection pump - Replace injection pump or repair it.
Dirty air cleaner - Service or replace the air filter.
Incorrect nozzle opening pressure - Set up as recommended.
| Engine stops suddenly during operation |
Fuel injection timing is not adjusted - Check the fuel injection pump timing adjustment.
Fuel filter plugged - Change filter element.
Engine is not preheated - Warm up to required temperature.
Injection nozzles are burnt or jammed - Check injection nozzles and replace if required.
| Engine stops while idling |
Low idle speed setting is not correct - Correct the settings.
The valve clearance is incorrect - Need to adjust valve clearance.
Damaged fuel injection pump - Change pump or rebuild it.
Fuel injection nozzles are dirty or defective - Clean or replace injection nozzles.
Dirty fuel lines or hoses - Service fuel hoses and lines.
Dirty air filter element - Change air filter element.
Leaking cylinder head gasket - Install new cylinder head gasket.
Injection timing is improper - Adjust according to specifications.
Fuel injection pump is faulty - Repair or install new pump.
One of moving engine components has failed - Repair or replace defective components.
Clogged radiator core or damaged radiator cap - Change cap or clean radiator.
Insufficient coolant - Fill radiator to proper level and check components for faults.
Broken or loose fan belt - Fan belt must be replaced.
Engine oil level is low - Need to add engine oil.
Cylinder head gasket is damaged - Cylinder-head gasket replacement required.
Unadjusted injection timing - Check injection timing adjustment.
Low crankcase oil level - Need to add oil.
Defective oil pump - Remove and inspect oil pump.
Engine oil filter is plugged - Clean or change engine oil filter.
Relief valve is defective or dirty - Change or clean relief valve.
Excessive oil clearance of crankshaft bearing - Check and change or repair defective parts.
Crankpin bearing clearance is excessive - Check and change or repair defective parts.
| Engine using too much oil |
Oil leaks: Gaskets or seals may be damaged - Defective components must be replaced.
Crankcase oil too light - Use oil of correct viscosity.
Stuck or worn piston rings - Piston rings replacement required.
Damaged valve guides or valve stems - Need to replace the valves.
Pistons or cylinder liners are scuffed - Inspect liners and pistons, fit new parts as necessary.
Engine is not preheated - Warm up the engine.
Lack of engine oil - Checking oil level and add if necessary.
Improper fuel injection timing - Adjust according to specifications.
Pistons are scored or worn - Pistons need to be replaced.
Connecting rod misalignment or failure - Need to change or align the connecting rod.
| Starter motor cranks slow |
Low battery output voltage - Battery needs to be recharged.
Battery is draining quickly - Battery needs service or replacement.
Corroded battery terminals or disconnected wires - Connect wires correctly or change terminals.
Battery is drained or worn - Battery needs to be recharged or replaced.
Disconnected or improperly connected wiring harness - Inspect battery wiring harness and connect as required.
Battery voltage is low - Battery is drained, recharge it.
Faulty starter motor - Repair or install a new starter.
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