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  1. S

    '78 Merc 850 WOT Fuel problem

    Having troubles with motor running out of fuel at high RPM's or under heavy load. When it begins to act up, pumping the primer bulb brings it out of it. Have replaced fuel pump diapragm and check valves. Cranking compression is 130 across the board. Fuel tank vents operate. Line and primer bulb...
  2. S

    '78 Merc 850 High RPM fuel problems

    Having troubles with motor running out of fuel at high RPM's or under heavy load. It also seems to lack a little power out of the hole. When it begins to act up, pumping the primer bulb brings it out of it. Have replaced fuel pump diapragm and check valves. Cranking compression is 130 across the...
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