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  1. nola mike

    Lower Unit?

    Waterlogged boat always a consideration, sounds unlikely in your case. Physically impossible to turn the same rpms at lower speed unless you increase slip.
  2. nola mike

    Buying a used boat anxiety-talk me down.

    Good choice. Many boats that size have a 3.0L. The 4.3L will have all the power you need. Should hit 50mph or thereabouts and can handle all the watersports you'd care to throw at it. That package with a (likely) lighter boat and a lighter drive/engine will probably perform better than the 5.0...
  3. nola mike

    Lower Unit?

    If the rpms are good and the speed isn't, you either have a dirty hull, or are carrying a ton of extra weight. Maybe spun prop depending on exactly what it's doing
  4. nola mike

    Turning engine off noise

    Yes, you're dieseling. Uncontrolled detonation after you shut down, yes it's bad. Timing, carb problem, running hot, carbon in the engine, other causes. Is this all the time or only when running hard? First step would be to let it idle for a minute before shutting down. If it does start to...
  5. nola mike

    1987 Mercuiser 165 4 cylinder electronic ignition

    I need to stop replying at bedtime. Ok, ground the wire and measure. THEN you'd get some current through the resistor...
  6. nola mike

    1987 Mercuiser 165 4 cylinder electronic ignition

    Oh wait, no you don't! It'll still be 9v at the coil pos!
  7. nola mike

    Installing a new 4.3 Mercruiser

    Yeah, input shaft seal. How's the level in the drive?
  8. nola mike

    Installing a new 4.3 Mercruiser

    How's it smell? No mistaking gear oil from motor oil by smell
  9. nola mike

    2016 4.5L mercruiser i/o Very weak performance

    On a new to you boat, the prop would be my last suspect. Imo much more likely that it hit correct rpm at some point in its life, but then developed a mechanical problem. You need to verify rpms, and probably at least change fuel filters and ignition components. I'd also double and triple check...
  10. nola mike

    Losing Power - After two hours

    I mean, this is an electrical problem. I'm not sure if how you're explaining it is actually what's occurring--unless you have 2 separate issues. Just to be perfectly clear: the boat is in gear, under power. Then the rpms increase without speed increasing, but you're still in gear. You aren't...
  11. nola mike

    Installing a new 4.3 Mercruiser

    No, not normal. Is it gear oil? You're just looking for smooth rotation of the bearing.
  12. nola mike

    1987 Mercuiser 165 4 cylinder electronic ignition

    You win.
  13. nola mike

    Engine Dies When Hot

    Did I miss the part where you checked for spark when the engine won't start?
  14. nola mike

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    Some applications came with an inline filter, though I don't think any v8s did. Also I don't think any were on the pressure side of the pump. None of your setup looks stock to me, but I may be wrong. Usually hard lines to the carb, any flex lines need to be uscg approved. A spin on type filter...
  15. nola mike

    1987 Mercuiser 165 4 cylinder electronic ignition

    Measuring it at the end of the wire while still attached to the coil will be 9v 😁
  16. nola mike

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    If you have a mechanical fuel pump there's another filter in the fuel pump assembly. Sooty plugs can be an ignition problem as well, if you're not igniting the mixture. One cylinder problem would be plug problem in that cylinder only.
  17. nola mike

    Edelbrock 1409 hard start, flooding

  18. nola mike

    Edelbrock 1409 hard start, flooding

    I hadn't heard that, but there ya go. Mine flooded enough that the engine hydrolocked (petrolocked?). Luckily I realized what was going on before too much cranking.
  19. nola mike

    Edelbrock 1409 hard start, flooding

    Looked like it was flooding pretty bad on both sides, which had me questioning if it was grit. Though if it was working before...
  20. nola mike

    1987 Mercuiser 165 4 cylinder electronic ignition

    Yes. Just make sure it's the 12v switched lead. You also have a purple resistance wire going to your current coil that will be 9v or so.
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