Cat 3116T Troubleshooting
| Engine Model: Caterpillar 3116T |
| Engine Type: 4-cycle inline 6-cylinder direct injection liquid-cooled diesel |
| Total Displacement: 403 cu.in (6.6 L) |
| Rated Engine Power: 150-300 Hp (112-224 kW) at 2400 rpm |
| Aspiration Type: Turbocharged |
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| Diesel hard to start or doesn't start |
Clogged fuel filter - Install new filter element.
There is air in the fuel system - Bleed the system.
Defective or clogged injection nozzle - Clean or replace injection nozzles.
Fuel injection pump is not operating properly - Install a new fuel pump or repair.
Incorrect valve timing - Correct or change timing gear.
Restricted fuel pipes - Clean or replace fuel pipes.
Injection timing is out of adjustment - Set up as recommended.
Worn cylinder or piston rings - Change faulty parts.
| Engine starts and then shuts off |
Fuel filter element clogging - Clean the filter element.
Fuel injection pump is not working correctly - Replacement or repair required.
Air filter plugged - Clean or change.
Nozzle opening pressure is improper - Adjust as recommended.
| Engine stalls after running |
Incorrect adjustment of fuel injection pump timing - Set it up as required.
Fuel filter plugging - Clean the filter element.
Low coolant temperature - Warm up to required temperature.
Stuck or clogged injection nozzle - Clean or change injection nozzles.
| Engine stalls at low idle speed |
Low idle speed setting is incorrect - Adjust the low idle speed.
Valve clearance is not correct - Have it adjusted.
Fuel injection pump is not working correctly - Repair or change injection pump.
Clogged or defective injection nozzles - Service or change injection nozzles.
Dirty fuel hoses or lines - Fuel lines and hoses need to be cleaned.
Plugged air filter - Install new air filter element.
Cylinder head gasket is damaged - Gasket should be replaced.
Injection timing is improper - Adjust injection timing as required.
Fuel injection pump failure - Replace injection pump or repair it.
Any of moving engine components is faulty - Change or repair damaged parts.
Radiator core is clogged or radiator cap is leaking - Clean radiator or install new cap.
Lack of coolant in cooling system - Add coolant fluid to cooling system and also check it for leaks.
Fan belt is loose or defective - Change the fan belt.
Insufficient engine oil - Need to add engine oil.
Cylinder head gasket is blown - Replace the gasket as required.
Incorrect injection timing - Set the injection timing correctly.
Insufficient engine oil - Fill up the engine oil.
Oil pump malfunction - Repair or replace.
Oil filter element clogging - Clean or change engine oil filter.
Relief valve is stuck or worn - Replace or service relief valve.
Clearance of crankshaft bearing is excessive - Test and repair or replace worn parts.
Clearance of crankpin bearing is excessive - Test and repair or replace worn parts.
External oil leaks: Gaskets or seals are excessively worn - Worn parts need to be replaced.
Oil viscosity is incorrect - Use oil of correct viscosity.
Piston rings are stuck or worn - Change piston rings.
Valve guides or stems are damaged - Valves replacement required.
Cylinder liners or pistons are worn - Inspect pistons and liners, change as required.
Coolant temperature is low - Warm up engine as required.
Low engine oil level - Add oil to the engine crankcase.
Improper setting of fuel injection pump timing - Use the correct fuel injection pump timing adjustment.
Pistons are scored or worn - Pistons replacement required.
Faulty or misaligned connecting rod - Need to replace or align the connecting rod.
Battery capacity is low - Charge the battery.
Battery won’t hold charge - Battery needs to be serviced or replaced.
Disconnected cables or faulty battery terminals - Check cable connections and change or clean terminals.
Battery is low or faulty - Replace or charge as required.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Battery power is low - Battery is drained, charge it.
Starter motor failure - Repair or change starter.
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