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  1. T

    Water in Oil

    I want to test the block for internal crack...Blow 15psi into temp sensor port on thermostat housing. So I want the entire stat housing plugged except the temp sensor port..PS..The boat is still in the water in my slip
  2. T

    Water in Oil

    Thats a good idea.... still got recirc and raw water in
  3. T

    Water in Oil

    HMMMMMMMMMM....thanks
  4. T

    Water in Oil

    will do...Thanks
  5. T

    Water in Oil

    Thanks....I am having issues just finding the right fittings to isolate the cooling. I want to go through my stat housing via the temp sensor to apply pressure..Finding the right size plugs to block off the 2 water lines openings going to the bottom of each manifold ( i could "clamp" the lines...
  6. T

    Water in Oil

    PS. My water in oil was not all over bilge. Most came out of dipstick. Looked under valve cover on suspected side and not too dramatic. But slight milkshake sitting on top of spring. 2 cyl
  7. T

    Water in Oil

    Much appreciate your reply’s. Kinda giving me hope. Not banking on it but your logic is the way I think. I always winterize myself for eternity. Never an issue but knew I should probably check my stat but did not. Did all off season work, but not stat. Been in there for 5 yrs on yhe great South Bay.
  8. T

    Water in Oil

    Valuable feedback. Much appreciated I’ll let u know.
  9. T

    Water in Oil

  10. T

    Water in Oil

    Thanks. No never hydrolocked before. Just that one time.
  11. T

    Water in Oil

    Louc. Thank you for your advice. Much appreciated. I did have hydrolock the night it happened when I went to restart after hanging at gilgo for a bit. Towed home. Fired up the next morning. Little rough at idle then cleared up when I increased rpm in neutral. Changed out oil and filter 2x. I...
  12. T

    Water in Oil

    I don’t want to have a pissing contest with you on terminology. You say riser. I say spacer. Just looking for opinions. PS. https://www.marineengine.com/newparts/part_details.php?pnum=MER93320A13
  13. T

    Water in Oil

    Kghost. It is wet joint 5L. EFI. 305, they use 3 inch spacers. Full flow gaskets on both sides. Then elbows, Raw water cooled. What are your thoughts about louder exhaust and too much water turbulence at slow les that 5 mph wake zone driving.
  14. T

    Water in Oil

    I only use OEM manifolds, spacers and elbows. Just so F ing strange to have this happen (louder exhaust, turbulence). I drain to winterize, poke each and every port. I have been winterizing myself for years. Did I **** up?, a pressure test will tell me. Hoping for the best, but not sure......PS...
  15. T

    Water in Oil

    Help....2001 5.0L EFI engine with approx. 250 hrs on engine. Always ran mint, no real engine issues over the last 5 yrs I have owned. Always winterize correctly (live on Long Island). This yr I replaced all exhaust manifolds, spacers, and risers (elbows) before putting in water this season...
  16. T

    Mercruiser Injectors Not Injecting

    I had same issue. 5.0L FI though. Same manual. Mine was an ignition sensor.
  17. T

    Mercruiser 5.0 EFI 2001 with Idle problems

    Sounds like air maybe, I had similar issue and replaced the gasket on the throttle body and works fine now. They are cheap "cardboard" gaskets.
  18. T

    Occasional backfire?

    Just had a re man 5.0 efi put in boat from my marina. I believe they did a great job getting in and sounds and runs smooth. At least I think. Taking boat home by water from marina was about 1.5 hr trip by water. I am following all the proper break in procedures for varying rpms. After about an...
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