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  1. K

    Closed cooling through hull valve placement

    Are you sure the heat exchanger is cleat? Also when the engine overheats does it push coolant out of the fill cap. If it does you might be having a head gasket leak. They do not show up until there is a load on the engine.
  2. K

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    To prove out the problem set up a 6 gallon outboard tank so that it is easy to connect it to the fuel filter inlet. Run the boat until it starts slowing down then switch to the 6 gallon tank.
  3. K

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    There is a small fine mesh screen inside the suction tube. Pull the tube out and push the screen out with some wire or sometimes it can be blown out with compressed air.
  4. K

    Still baffled

    Those cables only go in the converter box 1 way as the pucks at the ends of the cables are different sizes. It could be that that the lower unit is an earlier model than the boat with hydro shift. Or the other way. If it works and does not slip just re-connect the cables in the control box...
  5. K

    4.3gl dieseling

    The idle speed might be too high. the idle rpm is probably on a sticker on the engine. Is this engine carbureated or fuel injected? What about the timing?
  6. K

    Volvo Penta 305 - Squeak and Rattle

    With the drive down and no squeak what happens when the drive is steered left and right?
  7. K

    Overheating AQ125a leaking cooling sustem

    Give the RTV a try, just clean everything and let it set a few days. Be sure to drain the coolant below the leaks. Some RTV sealants may not hold up against coolant so be sure which one you use.
  8. K

    Francine, Kenner, La.

    We were lucky as for as flooding as a lot of the surrounding areas did get water in their houses. We also got power and cable back within 18 hours. There are still plenty outages around. The flooding overwelms the drainage to a point that it also overtops the sewer system where toilet flushing...
  9. K

    OMC 800 Transom Seal recommendation

    Sierra Marine#. 18-2768. Transom seal OMC #. 909527. Transom seal
  10. K

    4.3 vortec Mercruiser..lots of questions

    it looks like you will need a replacement engine.
  11. K

    Outdrive failure?

    I Have rebuilt many mercruiser drives that burned up the upper gear set. I just pulled the rear bearing carrier and flushed out the housing. New seals and upper gears, good as new. What ever you do be sure that the drive can hold 10-15 psi. If the seller cannot show that keep looking.
  12. K

    Mercruiser 5.7mpi horizon single cylinder burning lean

    Have you tried removing the fuel rail nd blowing it out with compressed air. Maybe there is something stuck in the rail in the fitting that the injector plugs into.
  13. K

    Very difficult to shift into Neutral

    A vacuum gauge helps with the boat in the water. Quadrajets are usually happy at 3 turns out. But the idle stop screw has to be set where the next circuit is not coming on. Looking down into the Venturi there should not be any fuel bubbling from the boosters.
  14. K

    Francine, Kenner, La.

    We just lost power, Our Cummins/Onan just kicked in. I cannot believe we still have cable! Just a fact of life here in hurricane alley.
  15. K

    4.3 vortec Mercruiser..lots of questions

    I bet that if you pull the drive the driveshaft bellows will have water in it. Have you tried the power tilt, it may have water in it also. If you pull the drive then it would be a good time to pull the engine. That way you can clean the bilge and do any repairs from water damage.
  16. K

    No thermostat, overheating

    There is a good chance you have a head gasket leak. Your first post mentions an overheat event. Since you are drawing water from a thru hull fitting rules out the drive incoming water.
  17. K

    SEI preload and a stern jack

    The 18’ Donzi/ 383MPI I had was scary fast @ 70 on GPS riding up so high the pitot tube would come out of the water. The “K” planes kept the chine walk down. because of the deep V a turn at slow speed brought water to the rub rail. A guy drove all the way from California to buy the boat. One...
  18. K

    SEI preload and a stern jack

    Just curious, how much more speed did the stern jack provide? Does the boat “chine walk” when trimmed out? Does the boat have a “hook” near the transom? Checkmates are fast hulls as there was a dealer for them years ago here in New Orleans. Most had Mercury outboards.
  19. K

    Old Mercruiser 120 3000rpms WOT rated for 3900-4300

    With the correct drive ratio of 1.98 a 14X 17 propeller should be close to what should be on the drive.
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