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  1. S

    Dwell Vs. Altitude

    I am trying to tune my 1973 Mercruiser 888. The dwell in the manual says it should be 26-31 degrees with a point gap of .017 and timing 10 degrees BTDC. I run my boat at about 5000 ft. above sea level. Do these settings change due to altitude? I have run at these settings and it runs...
  2. S

    High RPM issues

    O.K. 1973 Mercruiser 888 has new wires, plugs, cap, rotor, rebuilt carb, and new points. All are set to specs. Timing is perfect at idle. Motor runs great until 2000 rpm and then the tach is all over the place cuts out and sounds horrible. If I go wide open throttle it will die. When I...
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