Tag Repair Cases

Komatsu PC210 Kept Ruining DEF Injectors: The Cooling Passage Was Blocked

See why a Komatsu PC210 kept ruining DEF injectors until the blocked cooling route around the doser was found.

Trace a Komatsu 138US hot-load hunting and black-smoke complaint to a boost hose rubbed through by the MAF housing.

Follow a Gleaner combine's unknown DTC through CAN branch isolation to an aftertreatment harness—without falsely naming an unproven component.

Follow a DAF CF75 rear-steer shutdown through cylinder isolation and pressure evidence to a flat hydraulic accumulator.

Follow a DAF CF hot cutout and no-restart through the stall capture to an engine ECU that stopped transmitting on J1939.

Follow an intermittent Case 821F CAN timeout where engine messages vanished while the ECU's power and ground remained stable.

Follow a Volvo FMX rail-pressure case where every injector leaked, hiding the result of ordinary one-at-a-time comparison.

Follow a Scania R480 rough-idle case where a healthy sister truck made the damaged crank-sensor signal unmistakable.

See how a New Flyer articulated bus with no codes, black smoke and misfire was fixed by restoring an omitted ICV suppressor.

Follow a Mercury Mariner outboard crank-no-start from missing spark to a disappearing main-relay ignition feed.