Cat 3306 DITA Troubleshooting
| Engine Model: Caterpillar 3306 DITA |
| Engine Type: 4-cycle inline 6-cylinder turbocharged and aftercooled diesel |
| Total Displacement: 638 cu.in (10.5 L) |
| Rated Engine Power: 125-325 Hp (93-243 kW) at 2200 rpm |
| Fuel System Type: Direct fuel injection |
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| Engine difficult to start or doesn't start |
Fuel filter plugged - Replace filter element.
Air in the fuel system - Air bleeding.
Fuel injection nozzles are faulty or clogged - Check and replace nozzles if required.
Fuel injection pump is defective - Repair or install new pump.
Valve timing is wrong - Adjust or replace timing gear.
Fuel pipes are plugged - Service or replace fuel pipes.
Wrong injection timing - Adjust injection timing as required.
Damaged piston rings and cylinder - Replace defective components.
| Engine starts but then stalls |
Fuel filter plugged - Service or replace the filter.
Fuel injection pump malfunctioning - Rebuild or replace pump.
Clogged air filter - Replace air filter element.
Nozzle opening pressure is not adjusted - Adjust as required.
| Engine stalls after running |
Incorrect adjustment of fuel injection pump timing - Set the fuel pump timing correctly.
Fuel filter plugging - Clean or change the filter.
Engine not warmed up - Engine is not warmed up to the required temperature.
Defective or stuck injection nozzles - Check injection nozzles and replace if required.
Incorrect low idle setting - Correct low idle adjustment.
Valve clearance is wrong - Correct valve clearance needs to be set.
Defective fuel injection pump - Rebuild or install a new injection pump.
| Engine power is insufficient |
Clogged or burnt injection nozzle - Test injection nozzles and change if necessary.
Clogged fuel hoses or lines - Service fuel lines and hoses.
Dirty air filter element - Service air cleaner.
Cylinder head gasket is worn - Install new cylinder head gasket.
Injection timing is improper - Adjust as recommended.
Fuel injection pump failure - Replace or rebuild injection pump.
One of moving engine components is worn - Repair or replace defective parts.
Clogged radiator core or leaking radiator cap - Install new cap or clean radiator.
Insufficient coolant fluid - Add coolant and check the components of cooling system.
Fan belt slipping or worn - Change as required.
Low engine oil level - Need to add engine oil.
Damaged cylinder-head gasket - Install new cylinder head gasket.
Improper injection timing - Adjust according to specifications.
| Insufficient oil pressure |
Not enough oil in the engine - Check and refill the oil.
Oil pump malfunction - Check and replace if necessary.
Dirty oil filter - Change or service engine oil filter.
Relief valve is stuck or broken - Change or clean relief valve.
Excessive crankshaft bearing clearance - Inspect and replace or repair faulty components.
Crankpin bearing clearance is excessive - Test and replace or repair worn components.
| Engine consuming too much oil |
Oil leaking: Gaskets or seals can be faulty - Replace defective parts.
Incorrect oil viscosity - Fill up with the proper oil viscosity.
Stuck or defective piston rings - Have piston rings replaced.
Valve guides and stems are worn - Replace the valves.
Pistons or cylinder liners are damaged - Check liners and pistons, install new components as required.
| Abnormal engine noise or knocking |
Engine has not warmed up to the recommended temperature - Warm up engine as required.
Engine oil level is low - Fill the crankcase with engine oil.
Improper fuel injection timing - Set the fuel pump timing correctly.
Pistons are broken or worn - Replace the pistons as required.
Connecting rod is misaligned or worn - Connecting rod must be aligned or replaced.
Low battery capacity - Battery is drained, recharge it.
Battery will not hold charge - Service or change the battery.
Disconnected wiring or bad battery terminals - Connect cables properly or replace terminals.
Battery is drained or worn - Charge or replace the battery.
Wiring is incorrectly connected or disconnected - Inspect wiring and connect correctly.
Low battery output - Charge the battery.
Starter motor failing - Replace or repair starter.
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