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The Problem Needed a Long Climb to Appear A heavy truck serviced by a workshop in Yemen produced black smoke and reduced pulling power during extended uphill operation. Around the workshop and on short road tests, engine response was considerably better. Because the complaint appeared under high ...
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The Engine Ran, but the Cylinder Data No Longer Made Sense A port-equipment repair operation in Djibouti replaced a diesel engine with another unit from the same general engine family. The replacement installation was mechanically completed, and the engine could start. Soon afterward, technicians ...
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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 ...
Cases
