Maintenance Tip of the Week – White Smoke 12/14/2015
Smoke is always a leading indicator of engine problems, normally fuel or combustion related. With the current emissions standards that require compliance from Marinediesel, you should never see smoke coming from your exhaust. That said, what does white smoke indicate?
1. Bad fuel quality (most common)
2. Problems with combustion
As to bad fuel quality, the first step should be to check the filtration and see what is causing the problem. Fuel treatment or enhanced filtration may solve the issue.
Regarding combustion, there are many causes: Pump failure, air filtration or exhaust pressure issue, clogged injectors, changes made to the ECU, worn gaskets or damaged manifolds.
If the fuel quality is good, then the presence of white smoke indicates that major service is absolutely necessary.