63 Merc 850 questions

JasonJ

Rear Admiral
Joined
Aug 20, 2001
Messages
4,163
I bought a 63 Mercury 85 horse inline six last month, and it has been running good, but I have a few questions. I have been running it at 40:1, do I need to run it at 50:1? I have noticed that it seeps a bit of oil/fuel mix in a few spots while running, just kind of bubbles out, at the mating surface between the block and the plate that the carbs are bolted to. Power and economy doesn't seem to suffer, and all the plugs are about the same color-wise, but I feel like I should fix it. Do I need to fix it, or should I just live with the seepage and clean the engine once in awhile?. Lastly, the engine is charging, producing about 12 volts from the rectifier, but when I disconnect the battery ground, it stops. Shouldn't it still run when the battery is disconnected?<br /><br />Jason J
 
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