Urgent advice needed-Universal steaming

[bongo]

As mentioned earlier, if it is white smoke, it will linger. White smoke is usually caused by too lean of fuel-to-air ratio. Possible causes: injector or fuel filter issues.
As mentioned earlier, if it is steam, it is common on a cool morning to see steam. If seeing steam on a warm afternoon, this is uncommon. Possible cause: Heat exchanger with some of the tubes blocked, or AIRBOUND. The raw water could still keep the engine at normal temperatures at lower loads, but the exiting water would be much hotter.
As a Marine Engineer, I've dealt with raw water heat exchangers for my entire career. I've seen them go from clean to dirty to unusable in a moment. (School of mackerel, mussels, sediment, plastic shopping bags. Point being, just because it was clean doesn't mean it is still clean. In the commercial world we always "vent" all of the air out of the heat exchangers, and I would look there first. Because a boat's raw water cooling system is so small, eventually, at higher flow rates, the air will probably be pushed out, eventually.

[Quadrille in JB]

Originally Posted by jmschmidt

Stick you hand in what you are calling steam. Does your hand become oily feeling? Slightly oily could be a bad injector or two. Not too bad a thing. Heavy oiliness could be blow-by lub oil. Not good.

No oily residue in the exhast and it dissipated within 2'.
Problem cleared up for now
Thanks for your input

[Quadrille in JB]

During our 30 day BI cruise we rarely observed steaming but when crossing Lake Okeechobee this week we steamed all of the way. It appears that this has a lot to do with the wind direction. We steamed continually with a following wind but not with a headwind. It appears the following wind does not allow for the steam in the exhaust to dissipate quickly which makes it visible. A headwind quickly dissipates the exhaust and the steam is not visible.
Before this trip I cleaned the exhaust elbow, the water mixing tube, the air intake, and adjusted the valves. The engine ran like a sewing machine.
Thanks for all of your helpful input.