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  1. Scott Danforth

    mercruiser 5.7 350/260hp alpha one outdrive starting issues

    I would stop throwing parts at it and start diagnosing. most of the time your old carb may only need to be gone thru. the "remanufactured" QuadraJet carbs you buy may actually be worse than your old carb. Start with verifying spark measure fuel pump pressure (should be 4-7 psi) verify engine...
  2. Scott Danforth

    What is this salt on my outboard block and spark plug holes?

    should have changed the impeller when you had it apart. sand will kill the efficiency of the impeller. Overheats kill the motor. do a compression check. If you overheated enough for the motor to quit. you most likely you collapsed the pistons or scored the cylinders.
  3. Scott Danforth

    rebuilt 3.0

    yes, unless you changed the cam to a roller cam. you need zinc in the oil. either buy oil with zinc in it, or add zinc to oil that doesnt come with zinc
  4. Scott Danforth

    1955 elgin water pump repair or replacement kit

    http://www.aomci.org/
  5. Scott Danforth

    Just thought I'd share a nice photo.

    My guess is Joe leaving his house out the back door made the news.....
  6. Scott Danforth

    1992 Grumman Sport Deck

    First, Welcome aboard Second, since the rub rail is probably TACO rub rail. search the TACO marine website. https://tacomarine.com/rub-rail
  7. Scott Danforth

    Hard Start All The Time

    yes it could be a dirty carb what is your staring proceedure exactly? please specify in detail did you just set the idle specs to 3/4 turns out and not verify that is where your motor wanted it? Never ever had a motor that ran best at a generic setting. every one required validating correct...
  8. Scott Danforth

    How do you test a lower unit for leaks.

    I use my mityvac 8500. it can switch between pressure and vacuum. Volvo gear boxes have a spec for both pressure and vacuum testing I believe Merc only has a pressure spec https://www.google.com/search?client=firefox-b-1-d&q=mityvac+mv8500 the kit comes with adapters for most anything...
  9. Scott Danforth

    MerCruiser single point drain leak.

    having worked side by side with many of the mercury marine engineers, I can tell you the system is over complicated and prone to failure. I can also attest that when it does fail, it will take out your block. its actually quite easy to remove once you understand the cooling system The only...
  10. Scott Danforth

    Repairing the gel oat on my Wellcraft 16.5 airslot

    covered in link 13 of this hull restoration forum sticky. https://forums.iboats.com/threads/how-tos-and-other-great-information.283508/ 90% of all your questions will have been answered in the stickies.
  11. Scott Danforth

    1955 elgin water pump repair or replacement kit

    check the AOMCI boards.
  12. Scott Danforth

    How do you test a lower unit for leaks.

    drain fluid pressure test
  13. Scott Danforth

    Procedure to drain and refill closed antifreeze on 5th gen Volvo Penta 4.3?

    side of the block on each side is the block drain, just above the pan rail, aft of the motor mount bosses. the heat exchangers need to be drained too. suggest a flush as well. get the factory service manual from volvo. its copywrited material
  14. Scott Danforth

    Procedure to drain and refill closed antifreeze on 5th gen Volvo Penta 4.3?

    Yes
  15. Scott Danforth

    Trying to find Brochure or manufacturer info on my boat.

    your boat is an islander based on the picture They are made off-shore in fiji https://www.fibreglass.com.fj/islander-boats If I had to guess, looks to be early 2000's Islander 17 Randal craft made small bass style boats. https://boatbrochure.com/products/randall-craft-brochure...
  16. Scott Danforth

    Request for Photos of Johnson V4 rebuild

    Its covered in the factory service manual https://www.outboardbooks.com/
  17. Scott Danforth

    1989 Mercruser 5.7 will not get over 2000 rpm

    run the motor from a separate portable fuel tank after you clean the carb. by clean, not talking an exterior spray of carb cleaner, however taking it apart, cleaning all the passages and verifying they are clear by passing fishing line thru them prior to installing a new gasket set.
  18. Scott Danforth

    3.0 Mercruiser seems to hang or seize when starting

    unless he is using a gap-style spark tester that shows a spark jumping a 3/8" spark, he is most likely using the cheap little one that simply has a light that lights up. the OP may not be getting a good spark. the little light-up spark testers will fire at as little as 5000 volts. dwell time...
  19. Scott Danforth

    Random

    18 gallons of fuel in 3.6 seconds is not bad this boat https://www.yachtcharterfleet.com/luxury-charter-yacht-23133/alamshar.htm consumes 13.6 gallons of fuel per second at WOT which is 65 knots. although its only published at 45 knots. Its rooster tail can be viewed from space. the aft...
  20. Scott Danforth

    Adding fuse panel question

    you will be fine with 8 gauge wire. the bluesea systems amp to length ratio chart is linked below https://www.bluesea.com/resources/1437 Most standard outboard control harnesses only run 14 gauge to the dash. some run 16 gauge.
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