I have 2ea. 1996 3 cyl. 75hp mercury outboard engines. One was filled with mud and burned up a piston. The other was leaking water from about 6 places around the block and center spark plug area. I took it apart and it was surprisingly free of mud and fairly clean. I marinetexed the holes and reassembled it. Now,it idles fine and just above an idle in gear,works just fine. At high speeds it is very powerful. When back down to very low speed, it shakes like is it missing on one cylinder. After a while,it runs just fine again. Even with all this shaking it continues to run and will go right back to high speed if called on. What to look for in this engine. Any reputable companies selling powerheads? Thanks
