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  1. Bt Doctur

    Not getting Spark on '86 3.0l Alpha 1

  2. Bt Doctur

    Not getting Spark on '86 3.0l Alpha 1

    On the starter it will be "0"volts On the slave it will be "0" vo;ts until the key is in "start" position The Red/purple should have 12 volts on it. But that is not your problem Do you have 12 volts on the electric choke ? If yes and no volts on the purple wire on the coil your resistance...
  3. Bt Doctur

    In Tank Fuel Pump 1985 Thompson Cutlass 185 Mercruiser IL 224 170 HP

    Well, somebody used your screen name to repair a plastic gas tank Factory mechanical will work just fine for another 40
  4. Bt Doctur

    Not getting Spark on '86 3.0l Alpha 1

    shift interupt ONLY works coming out of gear to stall the motor, cause a miss to allow the dogs to release,If activated it will kill spart, By having it run hot wired means you lost the 12v from the "I" on the switch to the main harness connection
  5. Bt Doctur

    Trim pump solenoid

    You are correct, the starter, and trim ones have a stepped base
  6. Bt Doctur

    Mercruiser 4.3 will not start

    your losing the power from the "I" ignition wire to the motor
  7. Bt Doctur

    Need help locating 4-6psi fuel pump for 4.3 w/ 4bbl carb

    Not unheard of but my mech pump was pushing 15psi whenever it wanted ,replaced with the Eaton electric pump and no more flooding issues. pressure for carbs should be no more than 6 psi
  8. Bt Doctur

    dual I/o power trim and tilt master button

    would not even bother ,just use the 2 trim buttons
  9. Bt Doctur

    Is it possible to put the upper half of the sterndrive on first? Or do I need to put the whole drive on together?

    unless you want to try turning the input shaft slightly every time until it lines up
  10. Bt Doctur

    1989 Alpha 1 Gen 1 shift issues

    to install a lower like that you put the lower shift shaft fully clockwise with prop locked CCW ,carefully raise the unit and start the front nut by 2 or 3 threads. Now locate the upper shoe and place it on the splined shaft. slowly turn the prop CCW until the driveshaft splines mate up ...
  11. Bt Doctur

    Leak from water distribution housing

    From memory, start with a 1 inch "T" a short 1 inch vert section 3-5 inches long, a i inch "street elbow" and 1 inch coupling on the right. On the left a reducer from 1 inch to 3/4 . PM me an address for the bushing that accepts the 1/8 pipe plug for draining On the bottom solder it in...
  12. Bt Doctur

    2000 mercruiser 4.3 alpha 1 gen 2

    plumb to the bottom even if you must cut the hose or replace the hose with the oem one for 4 inch center rise manifolds
  13. Bt Doctur

    Carburetor question

    check your fuel pump pressure first
  14. Bt Doctur

    What is this? PLEASE

    If installed with a bolt it could be the knock sensor
  15. Bt Doctur

    4.3 no start: starter whines and spins freely

    Your slinging around a lot of water best guess the starter got very wet and seized the bendix. May want to add a small pump as far back as you can and turn it on when you advance the throttle
  16. Bt Doctur

    Volvo penta 4.3 running rich

    check the fuel pressure. Do not blow off a pressure check because the pump is mechanical
  17. Bt Doctur

    MerCruiser 4.5L 250hp V-6 overheat

    more likely the poppet va;ve
  18. Bt Doctur

    Blown fuse

    Is this a EFI throttle body motor with computer?
  19. Bt Doctur

    Removing Castle Nut or Retainer Ring on a Mercruiser Alpha One Gen One Sterndrive.

    Anything over a year or two old, I drill a few holes to the SS lock ring. chip out the small section and then remove the remains
  20. Bt Doctur

    Blown fuse

    Does it connect to the starters battery post?
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