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  1. Bt Doctur

    1988 4.3 ltr engine starter wiring

    Remove the exaust manifold, then you gain access to the starter wiring and bolts
  2. Bt Doctur

    1984 Merc 120 trim sender plug location

    the limit switch wiring goes directly to the trim pump , there are 2 bullet connectors at the pump wiring blue/white and purple I think
  3. Bt Doctur

    1984 Merc 120 trim sender plug location

    trim sender is the brown and the other side goes to a ground
  4. Bt Doctur

    Engine Fire

    Vents have duct hose on them so no real entry into the eng compartment Got lucky it worked
  5. Bt Doctur

    Volvo penta trim pump circuit breaker

    only if you have the system that raises both drives at the same tine but you have switches to lower each one separately
  6. Bt Doctur

    Repair Manual for newer MerCruiser 4.5L 250hp

    https://www.simmercury.com/service-manual-8m0119305/
  7. Bt Doctur

    Which way does a Mercruiser MIE 260 distributor spin?

    except for a reverse rotation motor, dist turns CW, crank turns CCW An aft entry starter is just the reverse of a block mounted starter
  8. Bt Doctur

    Which way does a Mercruiser MIE 260 distributor spin?

    all gm dist turn clockwise
  9. Bt Doctur

    Merc 120 shift interrupt issue

    the switch never operates on land, if it does the lower shift cable is bad
  10. Bt Doctur

    1984 Mercruiser GM 350 engine no start, not even trying to fire

    A aft mounted starter like for a inboard? If Yes, starter rotation is just the opposite of engine rotation. All gm dist turn clockwise even the reverse rotation engines. So if Aft entry, a standard rotation motor uses a reverse rotation starter and a reverse rotation motor uses a standard...
  11. Bt Doctur

    Merc 5.7, alpha 1 gen2, Rochester marine 4bbl flood gushing up out of bowl/float vent!?!

    check the fuel pump pressure
  12. Bt Doctur

    Noisy water pump? 4.3MPI

    Well, when was the drive off for service last? Is there any water leaking into the boat?
  13. Bt Doctur

    Intake manifold gasket replacement advice and tips

    Only thing I do different is use PermaTex Aviation sealant around the water ports and gasket area around the water ports.and the intake bolts ,and a generous amount of Black RTV on the front and rear of the block. The oil leaks from the intake manifolds Only 3 places for that to happen, the...
  14. Bt Doctur

    sudden grinding noise then stallked.

    Oil was changed after last season and i didn't bother checking, Your really supposd to check the fluids EVERYTIME you start the motor the first time.
  15. Bt Doctur

    Noisy water pump? 4.3MPI

    Take the belt off first, no need to buy anything yet. Simply turning the circ pully by hand will tell you if it is the problem
  16. Bt Doctur

    1988 4.3 ltr engine starter wiring

    Why do people take things apart without pictures? Why do people do things without a manual?
  17. Bt Doctur

    Alpha Gen II Oil Supply Line Cracked and Leaking

    I have done this on a Bravo twin. Had to make some special tools and buy the special hose pliers. Make sure you cut the hose first
  18. Bt Doctur

    Side to Side play on wheel

    The steering cable nut should be snug in the steering tube.
  19. Bt Doctur

    Mercruiser 233 Overheating--Out of Ideas

    Have you eliminated the PS cooler? If everything else was checked then suspect a leaking head gasket blowing combustion gas into the cooling system
  20. Bt Doctur

    How much Trim Fluid?

    You fill it until its full , cycle the rams a few times, check and adjust fluid
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