ICM Modules, 861251A 1, 806956T 5 . Fits Thunderbolt Electronic Ignition Systems.
Q: Can you tell me what is the function of this ignition module, Mercruiser ICM 807264A01. Starts great, RPMS no problem in neutral. My symptom is only on power up under load the engine knocks pings and little to no power. I have changed most every thing (was due), Cap rotor wires plugs carb rebuilt new manifold and risers, new fuel and separator checked fuel tank and line, The symptom remains the same. Help A: The ICM or Ignition Control Module adjusts the timing of the engine and sounds like it is time to replace it.
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