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  1. nola mike

    Wiring question for 4.3l Merc

    If he's got power to the alt, the problem is after the plug...
  2. nola mike

    89 Horizon 180 with stock 4.3 upgrade questions

    On behalf of everyone trying to give you good advice...I apologize. Flywheel and/or coupler may be different, rear mounts may be different, front mounts will be different...I'm sure you'll find more problems as you get into your "cheap" project. If it's me, I pull a wrecker 350 for that same $200.
  3. nola mike

    Wiring question for 4.3l Merc

    Should be a common take off point for the purple somewhere, not sure where on the TKS. You'll have to trace the alt purple back...
  4. nola mike

    2003 Mercruiser 4.3 TB-V No Spark

    This is a 3 wire hall type "pull down" sensor. ICM uses a reference voltage, and there's a signal voltage through the sensor. When the signal wire is grounded to the ICM, it thinks the switch is closed (signal voltage is pulled down from 5v-->0) Can't quite picture this, but the sensor ground...
  5. nola mike

    Wiring question for 4.3l Merc

    Yes, with ignition on. Check the purple wire at the OP switch. Should have 12v. If not, check coil (+). Should have 12v off purple wire there.
  6. nola mike

    Buying a used boat with Mercruiser 228

    I would add that I'd pop the top cover off the outdrive to get a quick look at the condition of the upper gears
  7. nola mike

    I'm stumped, overheated 4.3 MPI, water in oil, replaced heads, still water in the oil

    .005 was milled, don't think he was referring to the flatness
  8. nola mike

    Buying a used boat with Mercruiser 228

    It almost certainly doesn't They're all water cooled. Some have auto style closed systems running antifreeze, most don't. Echo the others, transom/stringers are most important. Drilling a core sample is the only reliable way to test the wooden components. Hammering, tapping, etc are fairly...
  9. nola mike

    . . . and I Thought Hi-tech Boat Engines Were Bad . . .

    Thought he was talking to me. How/why did you need to register? Mine was still recognized as having been changed in 2020 and listed the same parameters.
  10. nola mike

    Thought my boat would be faster

    Growing up had an '82 Galaxy 16' with a 120 OMC, it would hit mid-upper 30's
  11. nola mike

    . . . and I Thought Hi-tech Boat Engines Were Bad . . .

    It still recognized the battery correctly.
  12. nola mike

    . . . and I Thought Hi-tech Boat Engines Were Bad . . .

    Ok, ready for this? Getting waste gate codes. Had BT scanner plugged in, apparently still powered with ignition off. Killed battery 100 miles from home (another story about getting a charger). Charged battery. Noticed on the way back (after every warning light tripped) that A/C doesn't work. Now...
  13. nola mike

    Melted coil feed wire = Bad Pertronix?

    It will show voltage but won't get hot because there isn't current through the wire. Reconnect it to the coil, disconnect neg wires and try again. If still good connect negatives one at a time.
  14. nola mike

    180rpm

    Sure it does... Just put some debris or water in there 😀 Did you check the contents of your old filter? New gas +bad gas =more bad gas. All the water/crud hangs out at the bottom of your tank. Would check all that Ted mentioned, but usually it's bad gas/carb until proven otherwise. Can try...
  15. nola mike

    Melted coil feed wire = Bad Pertronix?

    Disconnecting the neg side of the coil will eliminate anything upstream as the problem. Is the wire still getting hot? Possible that the tach/wire is shorted to power, but not sure what the exact issue would be if that happened. You can also connect an ammeter in line to see where your increased...
  16. nola mike

    Alpha Gen 2 Shift Cable Removal

    I was surprised how well these worked last time I ran into this. And yes, the sheath wears on the inside and needs replacing TOPEC 5-Piece Spiral Type Deep Extractor Set, Spark Plug Easy-out Set, for Removing Deeply trapped and Broken Bolts, Studs, Fittings, Threaded Pipes and Pins...
  17. nola mike

    Very loud "thunk" while underway...

    '03 25hp 2 stroke merc (no s/n handy, sorry). Cruising today at 3/4 throttle, no problems, and I hear a very loud "thunk" sound, and motor starts to rev. I immediately pulled off the throttle and went to neutral. Engine sounded fine. Shifted into fwd/neutral/fwd. No problems. Went slow for a...
  18. nola mike

    OMC to Merc swap in 1996 Sundowner 195

    Hammer test is lousy. Drilling some holes in tension and stringer imo it's the only fool proof way to test condition. Everything is accessible with the engine out, and definitely worth doing to make certain you're not putting lipstick on a pig
  19. nola mike

    Boat starts perfect but shuts off after 20 mins of driving

    The point was that carp in the tank can be causing your issues, and if you had debris in the carb filter it's probably in the carb. Assuming you don't have a water/fuel filter. As for this miracle fuel cleaner, please share with us--especially any proof of efficacy. How did you check for water...
  20. nola mike

    Audio warning system on 2003 Mercruiser 5.0

    that's what I'm saying. switch polarity is reversed between TB iv and v
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