I have a 2001 Cougar with a 225 EFI. My dealer said run it til it quits, evidently a good motor. One of the problems I experienced that the dealer corrected is the fuel line. The interior line will have a tendency to crack and break, which is not visible simply by looking at the fuel line (the outside of the fuel line is just a cover). These flakes and pieces of the fuel line will stop up the fuel filter inside the engine and cause some issues. I had the fuel pump rebuilt also, the ethanol mix in fuel will cause the rubber components to dissolve. Aside from a new water pump and lower unit oil being changed every year, there is really nothing to do to the engine. My experience, the 225 is a good engine but has poor fuel mileage. The up side? they will rock and roll if you want it to. Before having the fuel line replaced, my boat would GPS at 72 mph (thats with 52 gal of fuel, 2 people in the boat, and all of my fishing junk). I havent had it out since being worked on but I am really anxious to see the numbers. (work has kept me from going to the lake)
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