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  1. Lou C

    Single point drain winterization

    that's true, the time to do it is when you repower. That's why I keep saying it should be STANDARD. On a $50,000 new boat, they could include this don't you think? People pay more than what closed cooling costs for all kinds of un-needed junk. If it were standard, people across the South would...
  2. Lou C

    OMC Cobra 5.0 lower unit oil question

    right Hugh has got it, drain from the bottom most hole, replace drain plug, fill from middle hole with the dipstick just resting in the top hole, not screwed in so air can escape. When its full on the dipstick thread it in then remove the pump and replace your fill plug, threading in the...
  3. Lou C

    Single point drain winterization

    we don't know exactly how it's plumbed because most of us have older boats that did not have this system. However, anyone who has had any experience with winterizing cast iron engines, knows that when cast iron rusts (and fresh water guys yes it rusts in fresh water too) it flakes off unlike...
  4. Lou C

    Broken serpentine belt

    Also wondering if the bearing for your seawater pump could be starting to seize up. The natural resistance of the impeller blades could mask that I guess.
  5. Lou C

    Broken serpentine belt

    Get an accurate straight edge like a level and lay it across the faces of the pulleys to check for proper alignment, make sure none of the brackets are bent.
  6. Lou C

    Temperature Fluctuates - 2015 350 mag mpi ec

    Get an IR temp gun no need to burn fingers etc. My OMC/Volvo center riser exhaust runs at a cool 100* at idle and a max of 135* after coming off plane, I'm not sure what's normal for that Merc system.
  7. Lou C

    New Mercruiser 5.7 with oil/water mixing

    If there was never an overheat, it is possible that the engine itself did not overheat but the exhaust was overheating. You said that there was water in the oil but it was not milky but black. Water in the oil makes it look coffee colored, not dark. You also said that you didn't have water in a...
  8. Lou C

    Temperature Fluctuates - 2015 350 mag mpi ec

    So I guess they are cast iron not aluminum alloy then lol! Normal pre cat exhaust is about 50 lbs per side
  9. Lou C

    Leaking still after bellows replacement. Help please

    also yours being a 1994, that is the joint venture model that is the same as a Volvo, so the parts issues and mechanics not wanting to do work on them doesn't really apply, for what its worth. Same as a Volvo SX
  10. Lou C

    Leaking still after bellows replacement. Help please

    that you won't know unless you pull the drive and look inside the bellows.
  11. Lou C

    Leaking still after bellows replacement. Help please

    Yep agreed, while many do like sterndrives if you see how complex the once simple engines have become; with all the same designed in draw backs they always had, (ie a pain to winterize, poor access for repairs, bellows leaks cause expensive damage, fuel vapor concerns in the bilge & explosion...
  12. Lou C

    Temperature Fluctuates - 2015 350 mag mpi ec

    Ok I’m not familiar with this new fangeled Merc cooling system with the quick drain and all the extra hoses to do the same thing normal drain plugs and only 5 or so hoses and no plastic stuff to crack would do, but: Remember any raw water cooled system is not pressurized and depends on a good...
  13. Lou C

    Riser Extension Blocks - Full Closed Cooling ???

    Ok Ted I had the same issue with my OMC with the original one piece manifolds because the one piece design combined with the fact that OMC used long studs and nuts to retain the manifolds meant that the lower exhaust hoses had to be slid down first before the manifolds would slide off the studs...
  14. Lou C

    5.0 Mercruiser MPI Broken distributor Screw hole

    If you can fix it that’s good but a plastic distributor body and those infernal crab caps are 2 lousy ideas prepretrated on boat owners by either GM or Mercruiser!
  15. Lou C

    Hydrolocked - now what??

    If you’re getting water in one cyl here’s what I’d do: Remove the exhaust on the port side check for evidence of water leaking in. Look at the top of the center exhaust passage at the top of the exhaust manifold. If you see that look at the exhaust valves see if there is corrosion on the stems...
  16. Lou C

    Leaking still after bellows replacement. Help please

    Besides the water test, other signs of a rotted transom are gelcoat cracks around the outdrive cut out and flexing if you pull up and down on the outdrive hard (careful don't knock yourself out). A few people have had luck with seeing if they can get at the nuts that hold the inner and outer...
  17. Lou C

    New elbows on a 5.7 LX.

    Interesting, I was having trouble imagining where there would be a weep hole. You can see how it got clogged, I guess they could have made it bigger! The part that cracked you can see how much thickness was left, not bad actually.
  18. Lou C

    Leaking still after bellows replacement. Help please

    On the Cobra the shift cable bellows is at the top of the tube that screws into the bottom of the transom mount and is routed up in the engine compartment. Follow the shift cable back and you’ll see it. In my experience these rarely leak. That tube will actually have water in it but it’s routed...
  19. Lou C

    Mercruiser 4.3 thunderbolt sitting for 5-6 years

    Agreed at the very least you are going to be cleaning out the gas tank, cleaning and rebuilding the carb and changing all the fluids once it’s running. Take a look at the you tube channel Mustie1; he’s a master at getting neglected engines running and very entertaining to watch.
  20. Lou C

    1993 MerCruiser 4.3L V6 RAN OUT OF OIL

    That does sound like a failure of the oil pressure sensor, I don’t think that much oil would escape even if the rear edge of the intake wasn’t sealed up correctly. Sorry to hear that! I’m always scanning my gauges!
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