Perkins 403D-07 Troubleshooting
| Engine Model: Perkins 403D-07 |
| Engine Type: 4-cycle vertical 3-cylinder indirect injection liquid-cooled diesel |
| Total Displacement: 46.5 cu.in (0.76 L) |
| Rated Engine Power: 20.5 Hp (15.3 kW) at 3600 rpm |
| Aspiration Type: Naturally aspirated |
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| Engine starts hard or doesn't start |
Fuel filter element clogging - Service the filter.
Air in fuel system - Bleed fuel system.
Fuel injection nozzles are damaged or dirty - Service or change injection nozzles.
Fuel injection pump failure - Repair or install new pump.
Incorrect valve timing - Set the valve timing correctly.
Fuel pipes are dirty - Clean fuel pipes.
Injection timing is improper - Adjust injection timing as required.
Cylinder or piston rings are worn - Replace defective components.
| Diesel starts but immediately stops |
Fuel filter element is dirty - Change the filter element.
Fuel injection pump malfunctioning - Replace or rebuild injection pump.
Clogged air filter element - Service air cleaner.
Nozzle opening pressure is improper - Adjust as recommended.
| Diesel shuts off while driving |
Wrong setting of fuel injection pump timing - Adjust as recommended.
Fuel filter plugged - Replace the filter element.
Engine is cold - Warm up engine as required.
Stuck or burnt injection nozzle - Clean or replace injection nozzles.
| Engine stops at low idle speed |
Incorrectly adjusted low idle speed - Adjust as required.
The valve clearance is not adjusted - Adjust valve clearance.
Fuel injection pump is not working correctly - Replacement or repair required.
Fuel injection nozzles are clogged or faulty - Test injection nozzles and change if necessary.
Fuel hoses or lines clogging - Clean fuel system lines and hoses.
Air filter element clogged - Service air cleaner.
Cylinder-head gasket is broken - Gasket should be replaced.
Unadjusted injection timing - Set the injection timing correctly.
Fuel injection pump is broken - Rebuild or replace pump.
One of moving engine parts has broken - Repair or replace defective parts.
Radiator core is dirty or radiator cap is damaged - Clean radiator or install new cap.
Insufficient coolant - Fill the cooling system and check components for leaks or other faults.
Excessive wear of the fan belt - Belt change is required.
Insufficient engine oil - Need to add engine oil.
Blown cylinder head gasket - Change cylinder head gasket.
Incorrect injection timing - Adjust according to specifications.
Low crankcase oil level - Check and refill the oil.
Oil pump is damaged - Check and replace if necessary.
Oil filter is dirty - Replace or service engine oil filter.
Worn or dirty relief valve - Change or clean relief valve.
Crankshaft bearing clearance is excessive - Check and change or repair defective parts.
Excessive crankpin bearing clearance - Test and repair or replace worn parts.
| High engine oil consumption |
Oil leaking: Worn gaskets or seals - New components need to be installed.
Incorrect oil viscosity - Fill up with the proper oil viscosity.
Piston rings are stuck or worn - Change the piston rings as required.
Worn valve stems and valve guides - Valves need to be changed.
Cylinder liners or pistons are scored - Inspect liners and pistons, replace as necessary.
Engine not warmed up - Warm up the engine.
Engine oil insufficient - Need to add engine oil.
Fuel injection pump timing is wrong - Adjust as recommended.
Piston wear or scoring - Have pistons replaced.
Connecting rod is not aligned or worn - Align or replace connecting rod.
Battery capacity is low - Low battery charging, charge as required.
Battery drains quickly - Battery needs service or replacement.
Disconnected wires or corroded battery terminals - Connect wires properly or change terminals.
Battery is discharged or defective - Replace or charge as required.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Battery power is low - Battery needs to be recharged.
Starter motor failure - Starter needs to be replaced.
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