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  1. Bt Doctur

    Engine keeps running after power shut off

    the diode is in the alt. its backfeeding . try removing the orange wire at the alt output post
  2. Bt Doctur

    R/R Fuel Pump brass fittings what sealant do I use?

    Perma-TexAvation sealant
  3. Bt Doctur

    Dry Chuffing Noise 1st Day of Season 1997 7.4LX MPI

    sounds like a noisy gimbal bearing
  4. Bt Doctur

    Engine keeps running after power shut off

    and the alt has a shorted diode in it back feeding the system
  5. Bt Doctur

    Carb issue.

    incorrect needle and seat or float adjusted wrong
  6. Bt Doctur

    shift cable thread insert repair

    developed this in 2019 and installed it in my boat, no issues so far For alpha1 and alpha gen ii housings Here you go 39/64 drill bit ..6094 , 1/4 inch pipe coupling, 1/4 x 18 NPSF tap , Red Loc-Tite. With 1 hex machined off, the O.D of the sleeve is .619 leaving a .010 press fit. Once...
  7. Bt Doctur

    90 Amp Fuse Question

    what you will find is the alt protected by the 90A and also the main power for the but but thats after the 50A CB, blow the 90 and your dead in the water, move the red wire directly to the starters main post and all you can lose is the charge from the alt
  8. Bt Doctur

    So I ended up sinking a bit.eek! 82 sea ray

    you mention taking on water but make no mention of the automatic bilge pump that should have alerted you?
  9. Bt Doctur

    Mercruiser 120 1984 model kill-switch activates too easily

    cab be: corrosion in the shift mech when in reverse especially the slide a bad cable There is no lubrication of the lower shift cable core
  10. Bt Doctur

    Alpha I Gen II Impeller Replacement

    the curved section is installed first in the upper unit , the guide tube and O eing retainer goes on the pump
  11. Bt Doctur

    Fuel return

    you have a dual feed tank. commonly used with twin engine installations use 1 for your motor and plug the other one
  12. Bt Doctur

    Fuel return

    post pics but have never seen a return fuel line to a marine gas tank. some diesels do use a return line to the tank, If your fuel injected, there is a cooling line but usually its never disconnected?
  13. Bt Doctur

    Trim pump not working in down position

    access the pump, reverse the black and grey lines.the higher pressure should allow you to lower the drive.You may have to replace the end caps of the cylinders due to corrosion NEVER store a drive in the in the full up or full down without relieving the pressure from full stop
  14. Bt Doctur

    how to determine the year 175 ocean pro

    could only get a clear pic of one engines ,yes one is CR. Thanks to everyone for the help Ed
  15. Bt Doctur

    how to determine the year 175 ocean pro

    been searching but no joy so far, can i use my 175 e-tec manual for it? 175 off shore G03178617 J175BXETR Thanks
  16. Bt Doctur

    Engine runs perfectly for 30 minutes + then dies with no dash power

    open the gas cap and retest
  17. Bt Doctur

    Top gimbal bearing o-ring on drive shaft sheered off?

    The large square O ring is installed with bellows adhes, weatherstrip adhesive, or contact cement in the housing first. If dislodged water can enter the drive
  18. Bt Doctur

    Gimbal bearing install fail?

    the alum race has a circular groove that eventually lines up with the hole in the bearing race, not necessary to line up the grease hole. Is important to have the bearing fully seated What did you use to install it?
  19. Bt Doctur

    De-winterizing Mercruiser 5.0 mpi with heat exchange

    That is called the "water heater" it supplied heated water thru the AF side of the motor 1- Put the muffs and the water hose on the stern engine, turn the engine on, and keep it running a minute or two until antifreeze in the engine is replaced by hose water. You flushed the raw water side of...
  20. Bt Doctur

    3.0 liter carb problem

    holy`s are great but could you replace it with the rochester 2 bbl if the bolt pattern is the same
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