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  1. M

    Mercruiser 3.0 only starts when you let go of the key

    Update: I did need to replace the Ignition switch. $16 O’Reilly. Moisture disabled contacts for the I-post which brought back the crank no spark issue.
  2. M

    Mercruiser 3.0 only starts when you let go of the key

    Had a similar issue, which proved to be a bad starter. Through time the starter was no longer energetic on my Mercruiser 5.0 (LB9 ?) 230 HP 1985 antique/vintage Cruisers Yachts. Local mechanic paid a house call measured and confirmed unusually high amperage draw. With that draw you will...
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