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  1. Bt Doctur

    intermittans spark, poor spark Delco EST coil

    Just repaired a volvo v8 with a no run condition. The coil laminations got corroded and rusted and expanded to destroy the coil. The plugs would not fit correctly. Standard products make a replacement coil for $26 or there abouts. Grind and remove the rivets and attach the bracket to the new...
  2. Bt Doctur

    poor spark from coil,not running, intermittant spark

    Just repaired a volvo v8 with a no run condition. The coil laminations got corroded and rusted and expanded to destroy the coil. The plugs would not fit correctly. Standard products make a replacement coil for $26 or there abouts. Grind and remove the rivets and attach the bracket to the new...
  3. Bt Doctur

    Mercruiser outdrive horizontal alignment

    The rear height between the rear mount should be the same . If different a rear mount has failed and thats why the coupler was destroyed.When replacing a coupler always replace the rear bushings. I have found lateral alignment off on a few boats ,that is corrected by loosening and shifing the...
  4. Bt Doctur

    New throttle cable doesn't work

    Disconnect the cable at the carb, adjust the idle speed, install cable with slight pressure to close the carb likage
  5. Bt Doctur

    Mercruiser outdrive horizontal alignment

    If you didnt replace the rear mounts too ,alignment may still be an issue
  6. Bt Doctur

    Mercruiser 470 head and gasket inspection

    between the top 2 cylinders looks blown
  7. Bt Doctur

    1995 OMC 5.0L Winterizing

    The only safe way is to flush and fog the motor until it stalls. Open all the drains and probe to insure complete drainage. Remove large hose at therm housing and pour the a/f directly into the block, and then into the manifold hoses
  8. Bt Doctur

    Ford to Chevy Shiftplate Relocation

    Well, if you had mercruiser elbows and manifolds
  9. Bt Doctur

    Bearing Buddys falling off

    Had the same issue, used some rubber tubing, 1 hose clamp on the hub, 1 hose clamp on the bearing buddy. Never lost another one
  10. Bt Doctur

    Engine removal with boat in the water

    Without perfect alignment a coupler is destroyed in as little as 15 hours. Knowing you have to lift the rear of the engine to remove it, how is that done if connected to the coupler? If your mechanic worked on race boats he would have told you that most use jackshafts from engine to drive .With...
  11. Bt Doctur

    Ford to Chevy Shiftplate Relocation

    On the stbd elbow are 3 threaded holes , the newer shift plate mounts there click to enlarge
  12. Bt Doctur

    Ford to Chevy Shiftplate Relocation

    You would be better updating the trim pump and cylinders and get rid of the reverse lockout.The shift bracket will mount to the 3 threaded holes on the inside of the riser
  13. Bt Doctur

    manual link

    By PM , link for Johnson 2000 90hp Or why there is a port just below the fuel inlet screen pouring out fuel. Mt first attempt at replacing the fuel pump side . Have no loose hoses left over. Did I mis-alighn something when I had it apart?
  14. Bt Doctur

    New 03 Sea Ray 176 owner, how to use quick drain block and mainfold handle to winterize?

    The handle only holds the hoses, release the quick discs ,lower the hoses to drain. If nothing is coming out out the hose, remove the hoses at the block and manifold and probe to insure it is draining
  15. Bt Doctur

    1987 Mercruiser No spark after warmup

    The 470 is chain driven. If you reverted to points/condenser you need a resistor in the circuit.The points and condenser will burn up. If you have a internally resisted coil you can run a jumper from the + battery to the + coil to see if the motor cuts out. Either the coil is breaking down...
  16. Bt Doctur

    Oil Pressure and Water Temp Alarm Test

    Failure to watch the gauges will do that.Only test is grounding the alarm wire at each sender to see if the buzzer goes off
  17. Bt Doctur

    Aftermarket 4.3 Exhaust and PS Line Break

    the lines going to the cooler are low pressure return lines , what you did will work just fine
  18. Bt Doctur

    Gear Oil in UJoint Bellows

    With a GEN II most likely for the carrier but not for the driveshaft seals
  19. Bt Doctur

    4.3 EFI drainage ports

    remove the hoses/quick connects and probe the openings
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