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  1. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    Yes, I did this test back over a month ago and it passed. Service manual had me also disconnect the shift interrupt wires and join the engine harness wires together for this test, in addition. I made my own jumper wires out of OFC copper braided cable. The ignition timing was dead on 2 degrees...
  2. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    Hello, I bought the new cylinder compression test kit last week, and ran it on all 4 cylinders. Here are the results that I recorded: Cylinder #1: 175psi ; Cylinder #2: 175psi ; Cylinder #3: 175psi, and Cylinder #4: 180 psi. I noticed that one AC Delco (MR43LTS) spark plug had a very slight...
  3. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    I checked the hormones on the gears and they are within spec.🤣
  4. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    I know, I said I am sorry, in a way & yet no closer to solving my problem, Nobody is allowed to be near the prop when running of course. Compression Test kit arrives tomorrow. To find out that the compression is off at this point would be a real kick to the groin. Fingers Crossed and Thanks.
  5. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    Thanks and Noted, I do that infrequently, as little as possible. I keep my eye on the temp gauge as well when I did that.
  6. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

  7. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    The compression test and fuel pressure test were not done, but I can go down that route, as I will need to purchase the compression test kit. I did so many other small tests that I forgot to mention so far , - I forgot to mention that I bought a spark tester, the one that's clear and goes inline...
  8. GeorgioP07

    2012 3.0L TKS runs great with muffs, but slow on lake...

    Hello, My Family and I bought this 2012 Bayliner 185 with Mercruiser 3.0L in later Summer 2024, ran it a few times, did a tune up, new plugs, wires, cap, rotor, water pump impeller, anodes, thermostat etc.. no problems, and winterized it well. Starting in 2025, w/fresh pump gas, -we noticed that...
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