Why one unit exhaust gas temp is low than other units of marine diesel engine?

A low exhaust gas temperature in one unit of a marine diesel engine compared to others can be attributed to several factors, including incomplete combustion due to fuel quality issues, improper air-fuel mixture, or malfunctions in the fuel injection system. Additionally, variations in cylinder wear, differences in turbocharger performance, or cooling system inefficiencies can also contribute to the disparity in exhaust temperatures. Regular maintenance and monitoring are essential to diagnose and rectify such issues to ensure optimal engine performance.