Mitsubishi 6D17 Troubleshooting
| Engine Model: Mitsubishi 6D17 |
| Engine Type: 4-cycle inline 6-cylinder liquid-cooled diesel |
| Total Displacement: 500.5 cu.in (8.2 L) |
| Rated Engine Power: 180 Hp (134 kW) at 2900 rpm |
| Fuel System Type: Direct injection |
____________________________________________________________________________________
| Diesel hard to start or doesn't start |
Fuel filter element clogging - Service or replace the filter.
Air in the fuel lines - Bleed the fuel lines.
Clogged or defective injection nozzles - Test injection nozzles and change if necessary.
Defective fuel injection pump - Change pump or rebuild it.
Incorrect valve timing - Use correct valve timing adjustment.
Fuel pipes clogging - Service or change fuel pipes.
Unadjusted injection timing - Use correct injection timing adjustment.
Cylinder or piston rings are worn - Replace faulty parts.
| Engine starts and stops suddenly |
Fuel filter element clogging - Install new filter element.
Fuel injection pump malfunction - Replacement or repair required.
Air filter clogged - Service or replace the air filter.
Nozzle opening pressure is improper - Adjust according to specifications.
| Engine stops suddenly during operation |
Improper fuel injection timing - Set it up as required.
Clogged fuel filter - Change the filter element.
Engine is not preheated - Warm up to required temperature.
Defective or stuck injection nozzles - Change or repair injection nozzles.
| Engine stalls when idling |
Incorrect low idle speed adjustment - Correct the settings.
Valve clearance is wrong - Need to adjust valve clearance.
Fuel injection pump is damaged - Repair or replace injection pump.
Fuel injection nozzles are damaged or dirty - Inspect nozzles and replace if necessary.
Restricted fuel lines or hoses - Service fuel lines and hoses.
Dirty air filter - Carry out maintenance on air filter.
Cylinder head gasket is worn - Change cylinder head gasket.
Injection timing is incorrect - Adjust according to specifications.
Fuel injection pump is faulty - Change or repair the pump.
One of moving engine parts has broken - Replace or repair damaged components.
Clogged radiator core or leaking radiator cap - Clean radiator or replace cap.
Engine coolant is insufficient - Add coolant fluid and inspect the cooling system for leaks.
Fan belt is loose or defective - If necessary, replace the belt.
Low engine oil level - Fill up the engine oil.
Cylinder head gasket is damaged - Change cylinder head gasket.
Injection timing is incorrect - Adjust as recommended.
| Oil pressure is insufficient |
Lack of oil - Fill up the engine oil.
Oil pump is damaged - Repair or change.
Engine oil filter is plugged - Service or replace engine oil filter.
Relief valve is stuck or worn - Change or service relief valve.
Clearance of crankshaft bearing is excessive - Test and repair or replace worn parts.
Crankpin bearing clearance is excessive - Test and replace or repair worn components.
| Engine using too much oil |
Oil leaking: Defective seals or gaskets - Install new components.
Crankcase oil too light - Use oil of proper viscosity.
Stuck or defective piston rings - Install new piston rings.
Damaged valve stems or valve guides - Valves replacement required.
Cylinder liners or pistons are scored - Inspect pistons and liners, change as required.
Engine has not warmed up to the recommended temperature - Warm up the engine.
Engine oil level low - Add oil to the engine crankcase.
Improper fuel injection timing - Adjust according to specifications.
Worn or scored pistons - Install new pistons.
Connecting rod is worn or misaligned - Replace or align connecting rod.
Battery voltage is low - Battery is drained, charge it.
Battery does not hold charge - Service charging system or replace battery.
Bad battery terminals or disconnected wiring - Check wiring and clean or replace terminals.
Battery is drained or worn - Change or recharge battery.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Battery capacity is low - Recharge the battery.
Starter motor failing - Starter should be changed.
____________________________________________________________________________________
| Industrial Engines Technical Specifications |
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Outboard Engines Technical Specifications |
