Cat 3306TA Troubleshooting
| Engine Model: Caterpillar 3306TA |
| Engine Type: 4-cycle inline 6-cylinder turbocharged and aftercooled diesel |
| Total Displacement: 638 cu.in (10.5 L) |
| Rated Engine Power: 222-362 Hp (165-270 kW) at 2100 rpm |
| Fuel System Type: Direct fuel injection |
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| Engine starts up hard or won't start |
Fuel filter element clogging - Replace the filter element.
There is air in the fuel system - Bleed the system.
Fuel injection nozzles are clogged or faulty - Change fuel injection nozzles.
Damaged fuel injection pump - Repair or install a new fuel pump.
Unadjusted valve timing - Correct or replace timing gear.
Plugged fuel pipes - Clean or replace fuel pipes.
Wrong injection timing - Use correct injection timing adjustment.
Cylinder or piston rings are worn - Replace defective components.
| Diesel starts but stalls suddenly |
Fuel filter element is clogged - Clean the filter or install new filter element.
Fuel injection pump is broken - Change or repair the pump.
Clogged air cleaner - Air filter maintenance required.
Improper nozzle opening pressure - Set it correctly.
| Engine shuts off while running |
Improper setting of fuel injection pump timing - Adjust the pump as required.
Fuel filter plugging - Change filter element.
Coolant temperature is low - Warm up engine as required.
Injection nozzles are burnt or jammed - Clean or change injection nozzles.
Low idle speed setting is not correct - Adjust the low idle speed.
Valve clearance is not correct - Correct valve clearance.
Fuel injection pump failure - Repair or replace injection pump.
Fuel injection nozzles fault - Service or change injection nozzles.
Dirt in the fuel lines or hoses - Clean fuel system lines and hoses.
Air cleaner is dirty - Air filter maintenance required.
Cylinder head gasket is blown - Replace the gasket as required.
Injection timing is out of adjustment - Check injection timing adjustment.
Fuel injection pump is faulty - Rebuild or replace pump.
One of moving engine parts is faulty - Change or repair damaged parts.
Clogged radiator core or damaged radiator cap - Clean radiator or change cap.
Insufficient coolant - Add coolant fluid and inspect the cooling system for leaks.
Fan belt slipping or worn - Change as required.
Engine oil level is low - Check oil level and add oil as required.
Cylinder-head gasket is broken - Replace cylinder head gasket.
Injection timing is wrong - Adjust as recommended.
Not enough oil in the engine - Fill crankcase to proper oil level.
Oil pump is damaged - Install a new pump.
Plugged engine oil filter - Replace or clean engine oil filter element.
Worn or dirty relief valve - Relief valve need to be replaced or cleaned.
Crankshaft bearing clearance is excessive - Check and replace or repair defective parts.
Excessive oil clearance of crankpin bearing - Inspect and replace or repair faulty parts.
| Engine consuming too much oil |
Oil leaks: Worn seals or gaskets - Change to repair leaks.
Wrong oil viscosity - Use oil of proper viscosity.
Worn or broken piston rings - Change piston rings.
Damaged valve stems or valve guides - Change the valves.
Pistons or cylinder liners are scored - Check pistons and liners, replace as required.
Engine not warmed up - Warm up engine as required.
Engine oil level is low - Add oil to the engine crankcase.
Timing of fuel injection pump is incorrect - Set it up as required.
Scored or worn pistons - Replace the pistons.
Misaligned or faulty connecting rod - Align or change connecting rod.
Battery capacity is low - Charge the battery.
Battery runs out quickly - Service battery or change it.
Bad terminals or disconnected battery cables - Check cable connections and replace or service terminals.
Battery is low or faulty - Replace or charge as required.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Low battery output - Battery needs to be recharged.
Faulty starter motor - Change or repair starter.
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