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The First Repair Replaced the Failed Parts A construction-equipment workshop in Burkina Faso received a common-rail diesel engine after a high-pressure fuel-pump failure. Metallic contamination was found during the initial repair, so the damaged pump and affected injectors were replaced. The machine ...
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A New Sensor Created a New Diagnostic Problem An anonymized mining-equipment workshop in Niger investigated a diesel engine that began recording rail-pressure faults shortly after its rail-pressure sensor had been replaced. Operators reported that the machine still started, idled and carried working ...
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The Generators Were Exercised Regularly—but Rarely Worked Hard A resort in the Maldives maintained diesel generators as backup power for guest facilities, water systems and essential services. The units were started regularly according to the site’s maintenance schedule. Most exercise periods, ...
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A New Filter Did Not Correct Fuel Starvation Road-construction equipment working at a remote Afghanistan project developed intermittent power loss during sustained heavy operation. Fuel filters were replaced, the tank pickup was inspected, and injector-related checks did not reveal a clear cylinder ...
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No-Load Exercise Created False Confidence A standby diesel generator at a Barbados facility was started regularly as part of routine maintenance. During these short no-load exercises, the engine started normally, maintained speed and showed no major operating complaint. The problem appeared when the ...
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The Complaint Started Immediately After Maintenance A fishing vessel operating from Samoa underwent routine fuel-filter maintenance before returning to sea. At the dock, the engine started normally and maintained low-speed operation. During the next offshore trip, however, the crew reported that ...
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External Wiring Passed Every Initial Test An oilfield generator serviced in Equatorial Guinea developed intermittent injector circuit faults after reaching operating temperature. Cold starts were normal. Static resistance checks at the external engine harness also appeared acceptable. Because the ...
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The Cylinder Number Refused to Change A heavy truck operating on regional freight routes in Burundi developed rough running and a persistent low-contribution indication on one cylinder. The suspect diesel injector was removed and replaced with a verified unit. The symptom remained on the same ...
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Static Inspection Showed Nothing Unusual A wheel loader working at a materials-handling site in The Gambia developed black smoke and power loss when pushing into a pile or lifting under heavy hydraulic demand. In the workshop, the engine started well and accelerated freely without load. Injector ...
Cases
