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  1. J

    200 Mercury EFI - Interesting Situation

    So, I want to preface that I bought it off Facebook Marketplace. I took it out on the water with the owner, and there were no leaks, the steering worked, the Engine sounded good with the cowling on, and there were no noticeable issues. I bought it for 4500, and I took it to a mechanic to truly...
  2. J

    Trying to find out what engine - Need help

    I believe I have a 1990-2000 Mercury 175 EFI 2.5 liter, and this serial number is not showing up online. The serial number is 06230926. If someone could help me locate this. That would be amazing!!
  3. J

    Mercury classic 50 HP - part 2

    https://forums.iboats.com/threads/low-compression-1986-mercury-classic-50.775479/#post-5951933 This is the original post and I’m making a sequel to that. In that post I basically discover that my top cylinder is giving me a compression of 30 to 40. When hot 100 I suspected there was something...
  4. J

    Low compression - 1986 Mercury classic 50

    I’m having low compression on cylinder #1 at 95 PSI when warm and 50 when cold. Cylinder #2 is at 125 Cylinder #3 is at 125 and Cylinder #4 is 115 Here’s a video of the engine running. I have an understanding that an engine with low compression tends to misfire and not start and if it does...
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