I work on a yacht that has 2 detroit diesel 16v92. The port main has a higher load and GPH then the starboard main and blows out a lot of black smoke from the exhaust. Injectors are all working and all pistons are firing good. We have hire several different companys to try to figure out the problem with no success. If there is something we are over looking please let me know.
Make (of engine): detroit diesel
Model (of engine): 16v92
Injectors, Comprestion test, plenty or air flow, props, cutlass bearings, and shafts have all been done last month.
Hello, welcome to JustAnswer.
Is the fuel pressure the same on both motors? Are the propellers the same pitch and diameter on both motors?
Yes the fuel pressure is the same and the props have the same pitch.
And they are the same diameter?
Hello- Thank you for asking. I have some other ideas that may help. The engine using the excess fuel is blowing back smoke. That is unburnt fuel as also shown by the extra fuel use. The reason will be-