Cat 3304 Troubleshooting
| Engine Model: Caterpillar 3304 |
| Engine Type: 4-cycle inline 4-cylinder direct injection liquid-cooled diesel |
| Total Displacement: 425 cu.in (7.0 L) |
| Rated Engine Power: 70-140 Hp (52-104 kW) at 2100 rpm |
| Aspiration Type: Naturally aspirated or turbocharged |
____________________________________________________________________________________
| Engine difficult to start or won't start |
Fuel filter element is dirty - Filter maintenance required.
Air in the fuel pipes - Bleed the fuel pipes.
Faulty or dirty injection nozzles - Replace injection nozzles.
Fuel injection pump damage - Repair or change injection pump.
Improper valve timing - Set the valve timing correctly.
Fuel pipes are plugged - Clean or change fuel pipes.
Wrong injection timing - Check injection timing adjustment.
Cylinder or piston rings are worn - Replace defective parts.
| Engine starts and then shuts off |
Dirty fuel filter - Service the filter.
Fuel injection pump damage - Repair or change injection pump.
Clogged air filter element - Clean or change the filter.
Incorrect nozzle opening pressure - Adjust as recommended.
| Engine stops running suddenly |
Timing of fuel injection pump is incorrect - Adjust the pump as required.
Fuel filter element is clogged - Clean the filter element.
Engine is cold - Warm up the engine.
Injection nozzles sticking or clogged - Clean or change injection nozzles.
| Engine stops at low idle speed |
Incorrect low idle setting - Correct low idle settings.
Valve clearance is wrong - Check and adjust as required.
Fuel injection pump failure - Change or repair the pump.
Defective or clogged injection nozzle - Check and replace nozzles if required.
Clogged fuel lines or hoses - Clean fuel hoses and lines.
Clogged air filter - Replace air filter element.
Worn cylinder head gasket - Replace the gasket as required.
Incorrect injection timing - Adjust injection timing as required.
Fuel injection pump failure - Repair or replace injection pump.
One of moving engine components is worn - Replace or repair damaged components.
Clogged radiator fins or leaking radiator cap - Clean radiator or install new cap.
Low coolant level - Fill the cooling system and check components for leaks or other faults.
Broken or loose fan belt - Belt replacement is recommended.
Lack of engine oil - Need to add engine oil.
Cylinder head gasket is defective - Replace cylinder head gasket.
Incorrect injection timing - Adjust injection timing as required.
Low oil level - Fill crankcase to proper oil level.
Oil pump failure - Inspect and change as required.
Oil filter is clogged - Replace or service engine oil filter.
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.
Clearance of crankpin bearing is excessive - Check and change or repair defective parts.
| High engine oil consumption |
Oil leaking: Damaged seals or gaskets - Change worn parts according to specifications.
Incorrect oil viscosity - Use correct viscosity oil.
Piston rings are seized or worn - Install new piston rings.
Damaged valve stems or valve guides - Replace defective valves.
Pistons or cylinder liners are damaged - Check liners and pistons, install new components as required.
Engine is not preheated - Engine is not warmed up to the required temperature.
Engine oil level is low - Fill the crankcase with engine oil.
Improper fuel injection timing - Adjust as recommended.
Broken or worn pistons - Pistons replacement required.
Misaligned or defective connecting rod - Align or change connecting rod.
Low battery capacity - Battery is drained, recharge it.
Battery is not holding charge - Service or replace the battery.
Wires are disconnected or battery terminals are corroded - Connect cables properly or replace terminals.
Battery is drained or worn - Charge or replace the battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Low battery output - Battery is drained, recharge it.
Starter motor is defective - Starter needs to be replaced.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Small Engines Technical Specifications |
| Car Engines Technical Specifications |
| Outboard Engines Technical Specifications |
