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  1. Bt Doctur

    3.0 Mercruiser seems to hang or seize when starting

    What is happening when you have a hot battery with clean battery cables on BOTH ends of the cables. Click/crunch or nothing? Does the drive have oil. in it or water. It could be seized
  2. Bt Doctur

    Motor won’t turn over

    ? Did you test run it before purchase
  3. Bt Doctur

    Can I replace a Mercruiser 5.0L with a 4.5L engine?

    6.2 I think would be the best, a drop in motor
  4. Bt Doctur

    Drive Creaking noise Alpha One Gen 2 ?

    pull the drive and recheck
  5. Bt Doctur

    350 Magnum - exhaust riser damaged brass plug

    Usually it is a sign the valve covers are reversed, oil fill is usually port side between 2 and 4
  6. Bt Doctur

    350 Magnum - exhaust riser damaged brass plug

    Agree, drain and remove the riser, drill and tap for 1/4 inch pipe using the correct drill bit. If not needed to drain it ,replace with brass allen head plug for clearance
  7. Bt Doctur

    Be easy on me please. Total newbie.

    Or remove the drive first, then beg,borrow,make a T bar using an old shaft to turn the motor
  8. Bt Doctur

    Spark plug heat range

    Plug readings are a bit difficult because of todays fuels
  9. Bt Doctur

    Manifold/riser condition

    dress the surfaces with a fine flat file , look good otherwise
  10. Bt Doctur

    Alpha one drive gear /shaft od 1.50:1

    With a new replacement gear set they want you to remove the small spacer and use rolling torque method, I just reuse the small spacer and just torque the nut down . Never had an issue
  11. Bt Doctur

    replaced gimbal bearing in merc alpha 1. cannot get alignment tool to engage with engine coupler at all. have tried to move bearing every way

    Was the old bearing destroyed or was the drive difficult to remove? If yes ,you have an engine alignment issue
  12. Bt Doctur

    Can Larson Senza be fixed?

    If your turning the motor please STOP before you break the bolt. Battery connection clean and tight at the battery, the starter and the neg ground at the block. Locate the slave and jump the yellow/red and red/ purple. If the connections and starter are good, motor should spin
  13. Bt Doctur

    Alpha one drive gear /shaft od 1.50:1

    The inputshaft bearings are both the same and use 2 spacers https://external-content.duckduckgo.com/iu/?u=https://www.bing.com/th?id=OP.kfoAP2juWbyl6g474C474&o=5&pid=21.1&f=1&ipo=products Do you mean the vert gear bearing?
  14. Bt Doctur

    Mercruiser outdrive oil/liquid leak during winter

    In any case remove the bell housing to gain access to the hose but cut the hose first.
  15. Bt Doctur

    Mercruiser outdrive oil/liquid leak during winter

    that is the gear oil transfer hose .Usually from old age cracking. Do not attempt replacement untill you cut the hose first. The transom side fitting is plastic and breaks very easily. Replacement requires steering ram removal to access that area. You can replace the hose by making/creating a...
  16. Bt Doctur

    Dual cable rotary steering

    sounds like you have a older stringer OMC Tru Course System
  17. Bt Doctur

    Old archived posts

    Absolutely nothing , it`s meant to show you that you dont dredge up old posts from years ago.
  18. Bt Doctur

    Replacing my outdrive but can't determine the right one!

    Basically, for anything under 140 hp 1.98-1 for 160 - 200 hp 1.65 or 1.84 for 260 hp 1.50
  19. Bt Doctur

    Old archived posts

    This has been repeated many times, do not post to old outdated posts.Those that do will find it locked. Consider them "Read Only" Start Your Own with your topic.
  20. Bt Doctur

    RE: Issues with Mercruiser 5.0 LX 4 Barrel Carb

    First, fix the temp gauge and sender or it will just happen again. The "not able to shift" is most likely a melted shift cable where is passed around the Y pipe.
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