Engineering · Diesel — Troubleshooting
A high exhaust temperature on one cylinder of a diesel engine most likely indicates:
- AToo little fuel to that cylinder
- BA faulty injector or late injection causing afterburning in that cylinder✓ Correct
- CExcessive jacket water flow
- DA cold start condition
Explanation
High exhaust temperature on a single unit usually points to a defective injector, poor atomization, or late injection — fuel that burns late/after the power stroke, raising exhaust temperature.
Authority: Diesel Engines (USCG engineering topic)
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