Recent content by Geoff1031

  1. G

    1970s Mercury 500 thunderbolt runs fine out of water but won't idle when in water

    I had my boat out this spring ran a tank of gas through it with no issues I changed spark plugs and took it out again and after running for a while it suddenly wouldn't idle but if I was able to get it to stay running and up to speed it runs great but as soon as I drop below half throttle to...
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