After 90 minutes of cruising today, my 1993 Johnson Oceanrunner 225 hp began to sound differently. <br /><br />I was at idle in the Mississippi River, and throttled up. But the engine was real slow in accellerating, and would not reach high rpm. I had been running no problem at 3800-4400 for the previous 90 minutes. But now the boat would barely move.<br /><br />Luckily, we were near a marina, so turned into the harbor. At low rpm in the harbor, the engine quit -- had to paddle in! Would not re-start when we got tied up at the dock. <br /><br />I waited a half hour -- would not re-start. Waited another half hour. Did start, but only with throttle assistance - and would not run at all at idle, and it quit.<br /> <br />I bought this rig ten days ago -- it's a 1993 Boston Whaler 21 foot Outrage with the 1993 Johnson 225. The previous owner told me he had the engine tuned in March with new plugs, and also something done to the timing.<br /> <br />I have run this rig for less this three hours total since getting it -- no problem until today. Now I am stuck. <br /><br />Any assistance, thoughts or opinions on this will be much appreciated. Thank you.