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  1. W

    omc 4.3 stalling, low power, loses prime, sucks filter half dry.. weak pump?

    Recent update decided to start a new thread since its a new problem.. my 4.3 is having an issue where it will fire and run for a while, few minutes, then die. And it runs really rough at 2800/3000 rpm which is as high as it will go on land or in water. Its draining the fuel filter halfway then...
  2. W

    omc 4.3l idles great but misses/runs very rough above idle.. no clue where to go now?

    So i will try to include as much detail as i can as to what ive done so far. I bought an 89 seaswirl sierra classic with a blown up 4.3 motor. Engine is a 94 vortec motor that had been swapped in ten yrs ago or so. The engine had somehow broken a ring in cyl. #2 and the piston melted/came...
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