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  1. ToboFan

    ECM for 1999 Mercruiser MCM 5.0L EFI / 305 CID

    Thank you for your support! There is another odd thing that I have seen: The whole distributor unit can easily be turned, without any significant resistance. I do not know how to lock in a specific position.
  2. ToboFan

    ECM for 1999 Mercruiser MCM 5.0L EFI / 305 CID

    Thank you, will do shortly
  3. ToboFan

    ECM for 1999 Mercruiser MCM 5.0L EFI / 305 CID

    Thank you! This was quick! How do I identify which EFI system I have?
  4. ToboFan

    ECM for 1999 Mercruiser MCM 5.0L EFI / 305 CID

    Hi there, I am desperately searching for a replacement/spare part/alternative solution for a possibly failing ECM. Boat: 1999 Searay Sundeck 240. Motor: Mercruiser MCM 5.0L EFI / 305 CID Engine Serial Number 0L379916 Symptoms are: A) Engine in idle runs a bit rough, B) In the water would...
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