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  1. Bt Doctur

    Still baffled

    could you have the wrong prop?
  2. Bt Doctur

    I have a leak.

    mostly caused by a damaged water inlet O ring
  3. Bt Doctur

    engine oil

    AAA+++ Rotella 15W 40 ,it has zinc for the lifters and cam
  4. Bt Doctur

    Aluminum water pump dam drain hole

    It`s there to prevent hot exaust gasses from being sucked into the pumps base.When your on plane that area only has your exaust gas and cooling water exiting the riser
  5. Bt Doctur

    Drain plugs on 1993 Volvo penta 740B -

    Can also install the mercruiser type with the blue plug
  6. Bt Doctur

    4.3 vortec Mercruiser..lots of questions

    where are you located?
  7. Bt Doctur

    Bellows Installation

    a slightly longer oil hose will help prevent breakage of the nipple
  8. Bt Doctur

    Bellows Installation

    1 good luck with that 2 get the pre-molded hose and 14 inches of oil resistant hose 3 down on the spring side 4 either will work, but bench is easier 5 reverse may not be obtainable 6 Yes 7 No ,hose friction will keep in in place Use clamp needle nose pliers to install it 8 on the bottoms away...
  9. Bt Doctur

    4.3/190 hp Chevy Vortec engine with Volvo drive on Glastron GX185 boat

    I service a pair of 5.7 Bluewater inboards with well over 2000 hrs
  10. Bt Doctur

    Leak when outdrive is up Merc 3.0 Alpha 1

    as stated , main bellows and shift cable bellows. shift cable bellow only can leak water, main bellow leak can destroy the gimbal bearing and outdrive from water intrusion
  11. Bt Doctur

    Manifold & Risers no longer available

    you started it dry and was ok, you added water and it didnt turn over, you let it sit overnight and it turned over, If this is correct your manifold/riser has a leak in it
  12. Bt Doctur

    Manifold & Risers no longer available

    5.0 ford or gm if their gm there are many suppliers for that engine
  13. Bt Doctur

    3.0 lost all power!

    that 90A block originally was to protect the alt and wiring, merc added the Red main system power to it for whatever reason. Why have a 50A after a 90A . I modify the wiring by adding the system power wire "Red" directly to the battery post and use a Maxi-Fuse crimped to the alt feed "Orange"...
  14. Bt Doctur

    Merc 4.5, any reason I can't just dump the block and manually fill with pg antifreeze?

    perfectly fine that way, just make sure you drain everything first
  15. Bt Doctur

    1993 Stingray 556 Leak in Bilge

    may also be a exaust pipe leak , the exaust in underwater running or not
  16. Bt Doctur

    Another Mercruiser 3.0 blue hose question

    I`ll see if i can get a pic of mine. 1 drains the manifold and hoses the other drains the block
  17. Bt Doctur

    4.3gl dieseling

    a high idle speed, lean carb condition,incorrect timing, hot running motor temp all can contribute to this condition
  18. Bt Doctur

    Not getting water to crank pumps-Bravo1

    If you also have low water pickups you need to block the holes on the bottom of the bullet when using muffs
  19. Bt Doctur

    Outdrive initially jammed when turned by hand

    or you didnt set the rolling torque correctly and seized the input bearings
  20. Bt Doctur

    Sn lookup help

    putting a zero first it comes up as the 2.5 L 1982--1989
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