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  1. Bt Doctur

    Mercruiser stalls coming out of reverse

    disconnect both cables. move slotted adjuster to the bottom of the slot push lower shift cable inward turning the prop ccw till locked and measures 6 inches , attach cable to bracket Shift control box to full forward attach plastic end first and then the adjusting barrel. Start engine verify...
  2. Bt Doctur

    cool fuel III interesting trouble

    Jut got a second one from the scrap heap. fully functional, good fuel pressures .clean fuel filter and mesh screen,unit cost $1600 from the repair shop plus labor. poor performance.runability.stalling. etc. all because I had to use a screwdriver to remove the sand and muck and the broken...
  3. Bt Doctur

    blue plug ear breakage

    SS replacements available from Hardin Marine Just got mine and there remarkable. Something I should have developed,
  4. Bt Doctur

    Gen 4 454 harmonic balancer screaming?

    if the balancer wobbles it could be a broken crank at #1 bearing cap and yes the motor will still be able to run.
  5. Bt Doctur

    Quicksilver 3000 classic throttle control

    let me get the manual but the only pin that size was used to activate the shift lever lock .was operated by thre top lever in the handel
  6. Bt Doctur

    Burning valves and melting spark plugs 5.7 efi

    I also had a plug blowout .The final cause was the clip inside the boot was missing and the plug wire was arcing to the top of the plug.
  7. Bt Doctur

    Shift cable adjustment

    I meant the lower shift cable you replaced https://forums.iboats.com/attachments/photo244203-jpg.232332/
  8. Bt Doctur

    Shift cable adjustment

    Are you positive you didnt put a kink in the new cable
  9. Bt Doctur

    cool fuel III interesting trouble

    Got my hands on a unit that a shop had replaced because of a fuel problem. The unit was not cooling the fuel leading to some issues, running ,vapor lock, etc. Shop replaced the cool fuel unit to restore service to the customer. I got it wanting to dissect it to see how it worked, What I found...
  10. Bt Doctur

    2001 Mag MPI Alpha lugs

    are you absolutely sure you have a 350ci inch 5.7 motor? Almost sure the boat performed well before the cracked block and now it never did. Makes you wonder A 5.0 220 hp cannot turn the gear ratio of a 5.7 .will not allow you to get on plane. A buddy did the same thing .bought a motor dressed...
  11. Bt Doctur

    2001 Mag MPI Alpha lugs

    sounds like you replaced a 5.7 with a 5.0 and you lost about 60 horses
  12. Bt Doctur

    NLA shift interrupt micro switch

    additional research shows that the part number 87-81428A5 is listed as a normally open switch , this type applies a ground to the circuit and this one 8M0052936 is a later type being a normally closed that open a circuit on activating Lots on ebay
  13. Bt Doctur

    NLA shift interrupt micro switch

    Should your switch go bad/not working you can update to the newer style with a small wiring mod. Remove and tape off the Green /White wire .Then go to the purple power wire that feeds the coil positive -remove it and connect to one side of the new switch, connect the other side of the switch...
  14. Bt Doctur

    Mercruiser Cool Fuel Module (Gen III) cooling passages routing question

    https://manuals.plus/m/36a636068f214705e7c0802c87ac41af7c7aa9aabb136ff1d53fa7c0f6b534d9 cool fuel III supplement
  15. Bt Doctur

    Alpha 1 Gen 2 shift question

    I like where it said to replace the very expensive ECM like us boaters have tons of cash. Why not send the ECM out for recalibration?
  16. Bt Doctur

    2005 bravo 3 leak but no leak

    if you find it has oil on it ASK how to remove it first before you snap the plastic fitting
  17. Bt Doctur

    2003 5.7 Volvo Penta water in oil

    the most likely cause is a leaking riser a leaning manifold blown head gasket cracked block from improper winterizatin
  18. Bt Doctur

    3.0 intake interchangeablultu

    it should not be an issue PROVIDING the riser bolts are a match to it
  19. Bt Doctur

    Omc 4.3l won’t stay running after 60 sec

    we would need to know if it has an electric pump
  20. Bt Doctur

    exhaust valve stuck open

    Yes sir, one of the easiest was to ruin a exaust valve, leaky manifold or riser.
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