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  1. nola mike

    Bizarre IAC reading

    Vacuum on my last 2 engines have been comparable to car values. I'm 18 mmhg at idle, but you need to make sure that timing and idle are within spec to get reliable values. if you are at 12 (and it's a steady reading--what the vacuum does as the engine runs is important) that would go along with...
  2. nola mike

    Shift cable bellows.

    Still don't think you're getting it. You need to have tension on the prop and lower shift shaft AS YOU REASSEMBLE. Let's make it simple. Remove the whole drive, split it, and redo.
  3. nola mike

    Shift cable bellows.

    well, no, but without the prop locked the shaft will slip and flop around a bit.
  4. nola mike

    Shift cable bellows.

    But are they mated correctly? They both need to be in the same gear when mated, which is why the prop needs to be locked.
  5. nola mike

    Shift cable bellows.

    Not sure if we're all just misunderstanding or you are, but if the lower is not in forward gear but the upper is (ie the shaft is facing forward), the intermediate shaft will be misaligned when you put it back together
  6. nola mike

    G3 Boat

    https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.g3boats.com/wp-content/uploads/2024/06/G3_Fish_Boat_OM_WEB_04-05-2023.pdf&ved=2ahUKEwic_-23vayPAxU438kDHUHqE9oQFnoECFIQAQ&usg=AOvVaw2zoSl1aey_gGFnyBz4lcKc
  7. nola mike

    MC-1 Drive Dog failure?

    That cable needs to have nearly zero resistance to work right before strange things happen. It has to really bind to trip the cutout on the hard. It takes much less of a bind to mess with the shifting in the water.
  8. nola mike

    Shift cable bellows.

    the prop locks but you need to keep tension on the cable. it will slip out of gear if not.
  9. nola mike

    Shift cable bellows.

    Yes, but it should still lock in one direction at least. I'd take the whole drive off, and if it isn't shifting correctly then, split the drive.
  10. nola mike

    Boat had been stored for 19 years

    It's strange having to think that the running gear is the easy part, but it absolutely is. No way to flip this boat unless you part it out if the floor is rotten (in which case you might get $1-1.5k). Even a basic floor redo if the stringers and transom are solid is $500+ and a lot of effort...
  11. nola mike

    Mercruiser 3.0 won't "lock in"

    probably won't need a gimbal puller (and I don't know that I'd replace it if it's good, though wouldn't fault you for it). with the engine out it's easy to knock out from the inside.
  12. nola mike

    MPI Starting

    where is the choke on an mpi?
  13. nola mike

    Shift cable bellows.

    Not knowing what you did, it's certainly possible to screw up the shifting when you split the drive or not engage the shift rod when reinstalling it. Does it lock in the other direction when you pull the cable out?
  14. 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...
  15. 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...
  16. nola mike

    Ignition sparks as soon as starter stops cranking

    on a 4.3?
  17. 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...
  18. 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
  19. 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...
  20. 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.
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