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  1. Bt Doctur

    Mercruiser Alpha 1 vs SEI

    Not all sei drives will whine. Their warranty is 3 years,unconditional .Merc doesnt offer that. Drive on my current boat is a sei,not a sound
  2. Bt Doctur

    OMC Cobra 3.0L Starter Wiring

    B battery cable, main system power ,alt charge wire. S yellow/red from slave to operate the starters solenoid
  3. Bt Doctur

    Water Streaming from Weep Hole After Impeller Change

    none of my drive squirt like that.something is not right . That is a drain cavity but never seen it with any pressure . It`s not like a outboard pisser
  4. Bt Doctur

    1990 3.0 mercruiser ignition voltage issues

    Check the connections at the starter
  5. Bt Doctur

    A Unique problem I have never seen

    That or too much Georgia White Lightening
  6. Bt Doctur

    A Unique problem I have never seen

    most FWC mercs have the exaust manifolds in the system also Should be interesting, will try to have some pics or video
  7. Bt Doctur

    A Unique problem I have never seen

    Have never run across this in my lifetime. Customer buys a boat from Georgia, 5.7 MPI BIII. no water test, no history just that it was winterized. Engine oil is clean and full , belt in good condition, overall appearance VG.bateries are good Now the only problem is the HX is filled with clean...
  8. Bt Doctur

    Mercruiser 4.3 water in block

    Water in multiple cylinders? Then suspect poor winterizing. Question them on their procedure.
  9. Bt Doctur

    Mercruiser 3.0 tks noise at idle or no wake speed

    Whatever you call that thing in the valve cover
  10. Bt Doctur

    Alpha lower unit crack in strange place?

  11. Bt Doctur

    Alpha lower unit crack in strange place?

    That is a drain cavity that did not drain and cracked the case outward. The bottom of that cavity is supposed to have a drain hole . Once filled with sand, saly, debris it cannot drain and will result in a crack. During normal servicing a long drill bit is tun down the cavity to clear the crud...
  12. Bt Doctur

    Confused with 5.7L Timing Cover Replacement

    serial number says bolts and grommets so I`d say plastic housing number says 1997efi 90-80950095
  13. Bt Doctur

    Mercruiser 3.0 tks noise at idle or no wake speed

    I heard something like that, it was the hollow pvc fitting causing the whistle
  14. Bt Doctur

    3.8 water gushing from engine

    They are "CORE PLUGS" not plugs for freeze protection
  15. Bt Doctur

    out drive

    R/MR/Alpha 1 90-99964 1983-1990 QSL94996Q2 Sierra 18-2619-1
  16. Bt Doctur

    Bellow Replacement

    the tube is only slightly more noticable but you dont have to shout to talk
  17. Bt Doctur

    Gimbal bearing.

    When you remove the drive and if you have the remote oil res for the drive CUT the oil hose in half before removing the housing. If you snap the plastic nipple end you may have to remove the motor to fix it. If not the motor then the steering cylinder for access.
  18. Bt Doctur

    Greasing the gimbal bearing question

    With the drive off, inject grease until you see it at the inner race
  19. Bt Doctur

    Mercruiser 5.7 wanting to stall at idle after driving around

    I was chasing a similar issue last year. Would run all day then decide to flood out.Did a rebuild, no luck, changed the carb to edelbrock, no luck come to find that my mechanical fuel pump was putting out 15 psi when it wanted to and then would revert to 4.5 psi. Switched to a electric pump and...
  20. Bt Doctur

    DPS-b drive lifts in reverse

    make or buy a pin wrench , thats all
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