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  1. P

    1969 merc 800 low compression

    Need input about low compression readings.friend asked me to fix his merc 800 from 1969.looking at it:wiring needs replacement same as fuel lines.now i did compression test for him and found #1 175psi,#2 175 psi,#3 30 psi, #4 170 psi.power head was rebuild by PO.now,when i sprayed oil in low...
  2. P

    1969 merc 1250 timing

    hi,can some one help me with timing on my motor.1250 merc 1969 vintage.what Is max advance timing for this motor with todays fuel.decal calls for 34* btdc.other issue that I am having is that when throttle is in idle and fitst pick up should be at 3-4* on first cylinder,#4 cylinder has...
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