Work — Deutz Serpic

: For engine diagnostics and adjusting settings (like constant speed), you would typically use SerDia2010 software rather than Serpic.

| Symptom | Likely Cause | |---------|---------------| | Engine won’t start | Rack stuck (corrosion/old fuel); stop solenoid failed | | Erratic idling | Governor spring broken; internal linkage binding | | Black smoke / over-fueling | Rack not returning; auto advance stuck advanced | | Hard restart when hot | Injection pump plunger galling (poor lubrication in diesel) | | Surges under load | Worn governor flyweights or worn control sleeve | deutz serpic