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My Mercruiser I/O 5.0L (GM305) died one day on the water and had to get towed in. Mechanic says ignition module was dead and recommended I install an EST conversion kit so I did but now engine only produces 3200 rpm at wot, down from normal minimum 4500. He told be to put a less pitch prop on...
My 1981 Mercruiser 470 runs fine at idle and revs fine when in neutral or out of the water. When in gear in the water it won't go over 1000 RPm and stutters badly. I think its a fuel issue but I can't decide what to do next? I had the card rebuilt but don't know if it needs more attention or...
