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  1. Scott06

    Flushing out cooling system after sucking in mud

    if you cant find them locally McMaster Carr is a good industrial supplier that is a quick ship.
  2. Scott06

    Hole shot

    No you down in pitch to get on plane faster This will sacrifice some top end speed and if you go too low the engine will hit the rev limiter or go beyond the recommended max wot rpm
  3. Scott06

    What prop? I'm lost

    Check stringers and transom for rot By drilling holes. I believe keyhole is same as merc and could swap drivetrain out of a merc 4.3 pretty easily Of you are handy. problem is interior work isn’t cheap unless you can do it yourself
  4. Scott06

    Hole shot

    Lets back up a second ,in an earlier post you mentioned current 18”is only getting 3800 rpm at WOT? If that is accurate something is wrong as, while I wouldn’t expect a 4.3 to be a speed demon, in that boat wot if running correctly should be getting more rpm. so either tach is off or engine is...
  5. Scott06

    Stuck again

    All good advice above heat first use some penetrating oil over a couple days. Heat apply some oil like Kroil as it cools down. Also would add some of the cheap hinge pins tools are chit. Might get a better tool Or I think a big Allen head fits in as well
  6. Scott06

    No start after engine install. Need Help!!!

    The two grey wires are bonded inside the harness, so only one is hitting t(e negative post of the coil. Attached is a wiring digram for your engine (assuming alpha version). so go through the troubleshooting after disconnecting the signal wire at the tach.
  7. Scott06

    Help me choose a new prop for my Ski Ray inboard tournament boat

    If u can have a prop shop repair the prop you have and get a baseline with it beyond a couple uses. Yes 4 blade and or lower pitch will give more hole shot. This depends on current wot rpm Vibration could be the prop, shaft, cutlass bearing or alignment as well as prop
  8. Scott06

    No start after engine install. Need Help!!!

    If y What Is the serial number of the engine ? Yes normally there are two wires on negative side of coil one to ignition module one to tach. But yours may be different hence the serial number If you ground the negative side of the coil you will kill the spark. You can always take the signal...
  9. Scott06

    What prop? I'm lost

    Given you don’t have a prop I assume you just bought the boat? Personally Try a 19” 3 blade aluminum to rough in where your wot rpms will land. You can move up to stainless from there and tweak pitch You may be aware that Yamaha only sold sterndrives for a handful of years , parts are hard...
  10. Scott06

    93 mercruiser 4.3 alpha one gen 2 fuel problem (I think)

    yes the fuel pump or off purple wire will provide a igntion on 12 v source
  11. Scott06

    Help me set up my new edelbrock 1409

    Bottom right of the first and top left of second of the page have how you should do it. This is out of the merc 3.0 manual.
  12. Scott06

    Can I lubricate the cutlass bearing with something so I quickly test forward and reverse on the trailer

    Water is what lubes it in use
  13. Scott06

    Help me set up my new edelbrock 1409

    It’s under load idle will drop from where it is in neutral
  14. Scott06

    No start after engine install. Need Help!!!

    Good point . I have. 2 grey wires on mine one to coil one to tach. If no wire is on net post of coil It will not fire. can disconnect the tach wire on back of tach Or check for continuity to ground with a volt meter
  15. Scott06

    No start after engine install. Need Help!!!

    Go through the rest of the TB troubleshooting guide.
  16. Scott06

    No start after engine install. Need Help!!!

    The TB troubleshooting guide starts with verifying the tach wire isn’t shorted to ground …
  17. Scott06

    Hole shot

    So I….
  18. Scott06

    No start after engine install. Need Help!!!

    Disconnect the tach wire (grey) at negative post on the coil. This will remove any chance the tach is killing the spark you can also disconnect it and check for continuity to ground with a volt meter. woukd agree battery and connections both positive and negative are suspect given the voltage drop
  19. Scott06

    Engine hour meter clicks with ignition on, but engine not running

    On an analog engine that is the only way to know it is running ( or should be…) power to ignition circuit.
  20. Scott06

    No start after engine install. Need Help!!!

    the oil pressure alarm doesn’t interrupt the ignition. It just makes the buzzer go off when below 4 or 7 psi.
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