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The Engine Behaved Like It Was Running Out of Fuel An agricultural diesel engine supporting irrigation equipment in Ethiopia operated normally after cold startup. After extended field operation, however, engine speed gradually fell and the unit became less responsive to increasing load. Mechanical ...
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The Engine Performed Better When the Machine Was Stationary A quarry machine serviced in Cameroon showed high fuel demand and weak performance while travelling with material. The diesel engine could accelerate normally when the machine was stationary, and injector testing did not reveal a clear fuel...
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Every Electrical Test Passed With the Vehicle Stationary A Libyan oilfield service workshop investigated a diesel vehicle that intermittently recorded an injector circuit fault during rapid acceleration or abrupt changes in drivetrain load. When the vehicle was parked, injector resistance and ...
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Static Injector Testing Passed An industrial diesel engine maintained by an Iranian workshop developed sharper combustion noise and changing exhaust behaviour as engine speed increased. At idle, the engine was comparatively smooth. Because the system used mechanical injection, the injectors were ...
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The Fault Did Not Belong to One Cylinder An Iraqi heavy-truck workshop investigated a diesel engine that developed noticeable vibration within a narrow operating-speed range. Diagnostic data also showed cylinder-contribution irregularities, but the apparent weak cylinder did not remain consistent. ...
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White Exhaust Did Not Automatically Mean a Nozzle Leak A workboat operating in Palau developed white exhaust and uneven combustion after the engine had been placed under sustained marine load. Because white exhaust can be associated with poorly burned fuel, technicians initially considered injector ...
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The Generator Needed a Full Thermal Cycle to Show the Fault A standby diesel generator maintained at a facility in Tonga started easily from cold and initially operated with normal idle quality. After reaching full operating temperature, however, the engine began showing uneven idle behaviour and ...
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Maintenance Was the Turning Point A fishing vessel operating from Guinea-Bissau underwent routine replacement of its fuel-filter and water-separator elements. At the dock, the diesel engine started normally and maintained low-speed operation without obvious hesitation. During the next offshore trip, ...
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The Replacement Injector Did Not Change the Idle Complaint A city bus serviced in the Republic of the Congo developed rough idle, uneven combustion and light exhaust smoke during extended urban operation. Diagnostic information initially suggested that one or more cylinders were contributing ...
Cases
