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  1. nola mike

    Bow light not working

    You're correct. Sounds like a short to power, but I can't think of why flipping the switch would turn the light off if that's the case.
  2. nola mike

    1988 350 Stumble Problem

    Check fuel pressure. Put a timing light on the coil wire and make sure you're getting consistent firing.
  3. nola mike

    Help a little old lady with her little old mercruiser 120 wiring?

    WTF. That makes no sense. LMK if I have this correct: 9 o'clock position: 1. Main (+) connection to battery/starter--always hot (no 110a fuse on the early ones? 2. Wire to coil pos--always hot? 3. Fused link to 3 o'clock position 12 o'clock: grounds 3 o'clock: 1. Fused link from 9 o'clock 2...
  4. nola mike

    Missing transom bolt on Mercruser outdrive to bellhousing.

    I'll note that when I encountered this, I had some localized rot around the holes. I was able to scrape out the rotten areas (maybe 1/2"), fill with epoxy, redrill the holes, and then slather the whole mess in 4200 before reinstalling. I probably could have just used 4200 instead of the...
  5. nola mike

    Missing transom bolt on Mercruser outdrive to bellhousing.

    +1, those bolts corrode either because of rotten transom or lead to rotten transom. Guessing that if you try to turn the other one it will just spin.
  6. nola mike

    Tb IV intermittent spark ?$#???

    Forgot about that part. Yes new sensor, other new tune up stuff won't hurt but isn't current cause of your problems. Like @04fxdwgi25 (and me earlier) said, consistent 12v to your coil is the most important thing to get sorted. You can try to jumper direct 12v to your coil pos and see if you get...
  7. nola mike

    Tb IV intermittent spark ?$#???

    No, end with the sensor. If you aren't getting power to the coil, nothing's going to work. (The troubleshooting guide would have stopped you at step 1 if you had looked at it). You need to trace your wiring and see where you're losing power. Start at the ignition switch.
  8. nola mike

    Slave solenoid does nothing

    Don't have that one, only manual 8.
  9. nola mike

    Slave solenoid does nothing

    Not sure if the 488 even had a slave solenoid--early 470s didn't (I don't have a wiring diagram for the early ones). Maybe some goofy wiring/alterations. But yeah, if you're getting a click to the starter then the problem is either the starter, main starter solenoid, or corrosion in between.
  10. nola mike

    pulling out the fuse box on a 2008 190TX bass tracker

    Did you remove that big face plate surrounding the cut out?
  11. nola mike

    Dieseling 3.0

    Also check your idle speed. Too high will make it run on as well.
  12. nola mike

    Gimbal Bearing Alignment/Installation Tool Question

    Doesn't much matter, needs to sit on the fat part of the bar, but far enough forward that the bar won't bottom out in the coupler before the bearing is in. I didn't have a drill press handy and just put some hose clamps on there to keep it from sliding (drilling is better).
  13. nola mike

    Tb IV intermittent spark ?$#???

    The issue is that your sensor is the more unreliable type to begin with, can leave you stranded, and is unfixable on the water. Might work, might not, might work for a while.
  14. nola mike

    Tb IV intermittent spark ?$#???

    Sounds like you have the old style sensor. Won't cause you to lose 12v at the coil pos but for sure will cause you to lose spark. Replace it, and suck it up and buy OEM (I might give Mallory or Sierra a shot, but am probably in the minority). But stay away from no name Amazon sellers.
  15. nola mike

    Tb IV intermittent spark ?$#???

    I think he's saying he's not getting 12v at the pos coil, which wouldn't be an issue with the tach. Do you have power to the gauges the whole time or do they drop out as well?
  16. nola mike

    High compression in 1 cylinder - 7.4 carb

    Hey neighbor! Just took a 35 mile cruise up to Tim's in Fairview Beach today.
  17. nola mike

    1972 Glastron v164 trim gauge

    Air/fuel. Installed a wideband o2 sensor to better tune my carb
  18. nola mike

    1972 Glastron v164 trim gauge

    Let's see some pics of the boat
  19. nola mike

    Mercruiser - 3.7 ( 470 ) Alpha1 ( please list the sources of CLEAN water in the oil ) about a cup - Antifreeze not leaking - no green in the water -

    Yes, that's what it's supposed to do. Raw water into the exhaust to cool it. I don't remember where the raw water circulates within the reservoir, here's a pic of mine years ago that had corroded through. Not sure if the leak is AF or raw water there though. Correct. Only thing is make sure...
  20. nola mike

    Mercruiser - 3.7 ( 470 ) Alpha1 ( please list the sources of CLEAN water in the oil ) about a cup - Antifreeze not leaking - no green in the water -

    OK, going to revise my earlier statement. Failed gasket can cause AF to leak into the exhaust, not raw water. A corroded (rusted through) reservoir can cause raw water to enter the exhaust I believe, but it's been a while since I've looked at one of those reservoirs. Manifold has no raw water...
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