The sea water fittings have been modified but the Gen 3 cool fuel unit, to my knowledge, is still painted on the inside. I happened to look at the replacement unit before they installed it on my boat.
Sincerest condolences...
Dreading that day.
"Near this Spot
are deposited the Remains of one
who possessed Beauty without Vanity,
Strength without Insolence,
Courage without Ferosity,
and all the virtues of Man without his Vices."
Here is a link showing all the serial numbers affected.
http://www.marinemechanic.com/merc/distributors/mercurymarine/sterndrive/gen3fuelmoduletesting.PDF
This problem has been documented multiple times here. If you are lucky the paint has not yet fouled the fuel rail and injectors. Doubtful since this problem is one that happens over a long period of run time and engine performance degrades slowly. By the time the problem is properly diagnosed...
Sounds like a single pump for multiple units is more prevelant than initially thought.
Alex, don't forget you'll need to add some relay logic to enable/disable that existing pump if you decide to utilize it with the new unit.
I think he was refering to comments like "how much pressure your hoses can take" and "blowing hoses all over the place" as well as "adds about 4 miles of 5/8" hose to the cooling circuit" You know, helpful educated comments like those. Oh, and my favorite "how long it'll take to fill the salon...
Besides the water in the lines picking up heat? Nothing. Just like the other tens of thousands of boats of all sizes with A/C where the seawater pump and part of the water tubing resides in the bilge. When the pump starts and cool seawater starts circulating that heat is quickly dissipated by...
Thousand ton open rooftop water towers have to deal with airborne debris, tons of pollen and other contaminants, bird droppings and solid pollutants that YOUR commercial unit does not. Marine environments are much cleaner by comparison.
The factory installed seawater hose on your boat is just...
This is pure nonsense. At a flow rate of almost 2000 gallons per hour the sea water spends only a second or two in the confines of the engine room. Not nearly enough time to absorb any appreciable heat.
By the way, these are not theories, but proven scientific and engineering facts that are...
Wow, so many experts and such little knowledge....This thread is filled with alarmists and misinformation. Pay attention, you may accidentally learn something....
Marine A/C, with the exception of some difference in piping materials used, is NO different in design and operation than commercial...
Electric resistance heat is more efficient by far and contains fewer moving parts making it far more reliable. Reverse cycle heat is limited in it's heating output as the entering water temp drops. The less heat the entering water contains the harder for the unit to extract it.
Also with...
Is the Oceanbreeze unit inverter driven? If so that's the unit to use. These units use D.C. compressors and motors which use much less current to start and run putting less stress on your generator system and alleviating the problem of multiple A/C units running simultaneously.
If it uses a...
THe fact that it takes so long to code out High Pressure indicates to me that you have a scale build up in your condenser coil which blocks heat transfer but not necessarily water flow. The fact that you see plenty of water flow through the hull fitting supports this. Feeling cool water coming...