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  1. J

    225 hp runs erratically

    I posted a few months back about a fuel starvation issue in a 1993 Yamaha 225. Turns out the culprit was stuck check valves coming off both main and aux. gas tanks on a Grady White Explorer (one boat yard looked at the boat 5 times and didn't see this-a second boat yard noticed it immediately)...
  2. J

    Problems with engine or fuel lines/tanks?

    1993 Yamaha 225 developed problems with acceleration. Repairs were made on 3 occasions. Plugs and fuel filter were changed, 2 leaky hoses were replaced, and one carburator was cleaned out. After each repair, the engine ran well at first (even sounded better) then the same pattern of...
  3. J

    Yam 225 intermittent stalling

    I have a 1993 Yamaha 225 that has been swinging between running fine and stalling on acceleration (usually mid-throttle), surging from 2500 to 3500 rpm, and/or losing rpms at high throttle. Changed the fuel filter and repaired a leaky hose and it ran great for a day. Then changed plugs and...
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