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  1. Bt Doctur

    Mercury 4.3 running rough - ideas?

    cap and rotor
  2. Bt Doctur

    alternator wiring - red and black wire Mercruiser 78403A2

    excite to the left, sense on the right
  3. Bt Doctur

    Never underestimate the power of the mechanical fuel pump

    this boat was running this same pump for years before i got the boat. Used it with a dealer reg for short test runs and occassionally the rochester would flood. Thought it needed a rebuild so installed a like new 1409. Worked ok for a while and then it started the same thing so figured it was...
  4. Bt Doctur

    Never underestimate the power of the mechanical fuel pump

    No, replaced it with the Carter style electric one
  5. Bt Doctur

    gm v6 one bank of cylinders not firing

    come on dodge, no magic crystal ball? Betting he didnt connect the spark plug wires
  6. Bt Doctur

    1993 mercruiser 4.3lx dies after a few minutes

    And could also be a filter inside the pickup tube
  7. Bt Doctur

    Stern drive woes

    the shift shaft bushing corroded in half. The threaded portion is still in the lower unit. The drive uses a spacial tool to set it up but you also can turn the drive upside down to set backlash. That drive will feel funny if you turn the shaft , its meant to be forced upward. If you lift and...
  8. Bt Doctur

    Alpha one Outdrive Trim motor works sporadically. Solenoid issue?

    if the solenoids click, then suspect contacts in the solenoid. If they dont, suspect a power conditon
  9. Bt Doctur

    mercrusier 350 MAG MPI coupler problem

    with proper alignment and maintence it will last a long time
  10. Bt Doctur

    Crooked boat on trailer

    You need to widen the rollers
  11. Bt Doctur

    Brown dust on exhaust and spark plug look

    How many bolts for the intake manifold? 8 is vortec, 12 is not
  12. Bt Doctur

    No engine alarms. Can’t find anything in service manual.

    a horn or buzzer will be under the helm. They work on a "ground" . When the temp or oil ground ,the alarm sounds. Switches usually located on the therm housing or intake manifold, oil near the oil pressure sender for the gauge
  13. Bt Doctur

    Brown dust on exhaust and spark plug look

    considering spark plug threads never go into a chamber I`m guessing your using the wrong plugs, extended reach instead of standard length
  14. Bt Doctur

    Alpha One power steering - how to remove cable?

    file:///C:/Users/Edeward%20J/Downloads/_06__Drives_R-A1_83-90.pdf
  15. Bt Doctur

    Alpha One power steering - how to remove cable?

  16. Bt Doctur

    Choke setting - error in manual?

    ignore any settings, adjust the choke plate to close on a 1/8 drill bit
  17. Bt Doctur

    Alpha One power steering - how to remove cable?

    carefully cut the tube off the cable and replace the tube , corrosion is holding it in place OR replace the cable and tube
  18. Bt Doctur

    U-joint seized into gimbal bearing

    This is after the fact but for those who cant pull a drive with the lift and drop method reattach the rams, cut pieces of 2 x 4 5,6,7,8 inches long and place between the top of the housing and transom. CAREFULLY use the trim/trailer button to raise the drive and force the drive off adding...
  19. Bt Doctur

    Raw Water Pump Priming

    wrong impeller if it all worked before
  20. Bt Doctur

    Mercruiser engine year

    96 to 97
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