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  1. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    only when warm. but the fuse didn't blow until ignition on and op switch jumped, before cranking. I was thinking high resistance somewhere on the yell/pur side could draw down the voltage. agree that I don't see a way that the diode is the only issue. also didn't realize this was a tks. goofy...
  2. nola mike

    How would a compromised bellows sink the boat?

    at least on the mercs there's a relief hole or something on the transom shield. first hand knowledge that it can absolutely fill the bellows from the engine side...
  3. nola mike

    Ignition sparks as soon as starter stops cranking

    on a 4.3?
  4. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    IF you spliced into the tach, and if you're getting 9v there while cranking (you should), and if you're getting 4v at the boat side of the plug, then the only things that could cause your drop are a frayed wire doing something funny or a poor splice/connection under the helm in the purple wire...
  5. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    this really doesn't sound right, but if you're sure that you're getting 9v at I and 4v at the cannon plug when there's a jumper to the dash then it's either the purple wire itself or a splice under the dash somewhere
  6. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    You need to work your way down the line of connections. Testing resistance across components with them disconnected probably won't tell you much since your problem is only under load. I'm thinking you don't have a ground problem since your red/pu wire maintains 12v and it shares a common ground...
  7. nola mike

    salt water in single cylinder

    many on here have had luck with Michigan motorz. I haven't purchased an engine from them, but have bought a few parts, and spoken with them about technical questions, they were very helpful.
  8. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    I think you need to summarize what exactly has been done to troubleshoot, and what exactly the symptoms are/where. especially since you supplied wrong information...(what is "a"? accessory on the key switch? irrelevant if so)
  9. nola mike

    Mercruiser 3.0 won't "lock in"

    vertical shaft in the drive. would be a good guess given your prop strike, but vid shows blown coupler.
  10. nola mike

    454 mag mpi chuggles/stalls

    can't you graph it with the diacom? and did you ever unplug the IAC?
  11. nola mike

    454 mag mpi chuggles/stalls

    so again, that MAP is increasing for no reason. shouldn't be with the IAC closing... I'm still curious as to what the timing is doing
  12. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    so test the resistance across the terminals is the ignition switch and see if you're getting continuity between b and i/s when in run/start
  13. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    sorry, I misread it. so you do have 12v at the red/pur when cranking
  14. nola mike

    2005 4.3 liter Mercruiser ignition trouble

    that red/purple is always live. it isn't a problem with the switch if you're losing power at that wire when cranking.
  15. nola mike

    Lower unit oil leak through weep hole after impeller replacement

    did you replace the housing and seal?
  16. nola mike

    What is this indicator? (2000 Bayliner)

    I'm able to download the PDF and can see it without blurriness. shoot me a pm if you want it
  17. nola mike

    What is this indicator? (2000 Bayliner)

    https://manualzz.com/doc/22948514/standard-horizon-ds41bd-owner-manual ?
  18. nola mike

    On throttle up the engine dies

    As AD said, need to know what ignition you have. EST works different than the TB or points.
  19. nola mike

    Oil Pressure Sender failure modes?

    I am aware. project with the boy. figured it would be relatively simple, carb'd 2 stroke, right? "all it needs is a battery". and then sea doo entered the chat. still in the planning stages interesting. hadn't thought to do that. wondering how annoying that alarm would be in practice...
  20. nola mike

    Oil Pressure Sender failure modes?

    I am so underwater with easy projects I can't tell you. Busy hurricane-proofing today. I finally got the boat working well enough that I actually cleaned it yesterday for the first time this year...Next easy boat project is a momentary switch for the fuel pump. And finish the other side of the...
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