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  1. M

    Need Optimax Gurus - at wits end!!

    I have a 2000 225HP Optimax that is running like crap under way / load. It starts, idles and revs perfect but in the water it starts breaking up / surging at around 1200, wont really accelerate unless I floor it then the engine will surge a few times and then accel hard to near 3K, when it hits...
  2. M

    Optimax 225 hard start

    Hey guys, just got a new to me 1999 Merc optimax 225. At first I couldn't get to start at all and then I read optimax doesn't like to fire on low voltage and it was dipping to 10v while cranking is that true? Seems like if the engine can spin it would fire... so I put the charger on overnight...
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