Scavenging and turbocharging
Causes of Turbocharger Surging:
1. Suddenly load change by heavy sea
2. Scavenge space fire
3. Exhaust trunk fire
4. Poor power balance
5. Dirty nozzle and blades
6. Individual cylinder misfire
7. Chocked scavenge /exhaust ports
8. Incorrect matching of turbocharger to engine.
9. Poor scavenging or leaky exhaust valve.