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    1992 mercruiser 4.3 Alpha one thunderbolt 4 system

    Labor Day weekend I threw a rod in my motor. So I bought a new 4.3 long block. I’ve replaced the following items. 1. Flywheel 2. Ignition sensor 3. Rebuilt starter 4. New eldabrock carb 5. exhaust flaps everything else on the motor is stuff off the other. So my issue I am having is random...
  2. N

    1992 4.3 mercruiser alpha one gen 2 thunderbolt 4 ignition timing/starter issue.

    So Labor Day weekend my boat thew a rod through the block. I bought another engine. Swapped it all over new intake and carb as well. Put it all back into the boat and got the timing set. This weekend I let it run outside of water for 30 minuets hooked up on hose like stated in the break in...
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