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  1. Dukedog

    1990 Mercury 2.4 V6 175 - Water leaking from power head, exhaust adapter plate connection and rattle - when engine cranked dry - runs good no rattle.

    ya on tha right track with tha adapter plates and motor mounts.. probably didn't cause tha "knock" though.. it probably isn't goin' away once it started.. need ta find out "whats" knockin' with a teardown.... could be a number of things but will only get worse and cause more damage as time goes...
  2. Dukedog

    water tube seal

    tha "seal" in question is tha one that presses into tha end of tha crank.. it keeps water out of tha bottom of tha motor.... part number: https://www.crowleymarine.com/mercury/products/54196a6-seal-carrier-assembly (ya need all three pieces)... once it comes lose it will not stay even if ya...
  3. Dukedog

    Having Problems with 1997 Mercury 150HP EFI V6

    tha one on top of head.. yes you will lose tha rotation sensor (strictly oiler related) but will have no effect on tha over temp sensor or alarm... tha oiler and over temp use tha same alarm buzzer but are completerly different circuits.. tha oiler module does nothing but make tha warning buzzer...
  4. Dukedog

    Having Problems with 1997 Mercury 150HP EFI V6

    you will need this first... https://www.buckshotracing77.com/product-page/mercury-v6-oil-block-off-kit.. 'bout any merc dealer will have it also.. its pretty self explanatory on installation after pump removal... then you will need to remove tha oil tanks, both (be sure ta plug tha fitting...
  5. Dukedog

    Having Problems with 1997 Mercury 150HP EFI V6

    sent... I have no clue about the motor history.... its a perfect candidate for "oiler delete"..
  6. Dukedog

    Having Problems with 1997 Mercury 150HP EFI V6

    do you have an OEM manual or it?.. if not send me an email addy and i'll send ya tha PDF for it.... it will be a big help with it.. if you know tha motors history, that can determine 'bout tha oiler or not.. if you have no clue as to how it was treated then ya might wanna delete and...
  7. Dukedog

    No tach,no charging

    a black coming from under tha "pudding" was a tell-tale sign it was a reproduction and/or a knock off...............
  8. Dukedog

    No tach,no charging

    lots of 'em on tha market at one time.. no wire, used case ground... maybe not so much now but they were......................
  9. Dukedog

    No tach,no charging

    i'd try ebay first... ya might wanna get a part number for tha right one......
  10. Dukedog

    No tach,no charging

    jus curious as ta why you don't have an oem manual for this motor???.. doin' things your self would make your life a bunch easier..... jmo.
  11. Dukedog

    No tach,no charging

    tha one in your picture is a combination reg/rectifier.. is same as as most mercs of tha early ninties up to somewhere in tha 2000's.. ready available on most parts sites.... try ta stay away for tha "real cheap" knock offs....
  12. Dukedog

    No tach,no charging

    bad stator.......... maybe regulator also.. it sounds like ya don't have tha right stuff ta check all three pieces so.......... replace all three pieces, regulator, rectifier, stator and be done with it.............
  13. Dukedog

    200hp efi overheating

    JAN: have you used tha same head bolts? did you do tha 90* thing with 'em?.. if you don't use new bolts you might just torque ta 35 lbs and go with it...
  14. Dukedog

    200hp efi overheating

    he did not!
  15. Dukedog

    200hp efi overheating

    it goes thru tha front side of tha can thru an exhaust tube thats suppose ta be sealed both top and bottom.. its completely separate from exhaust... without it (like our hot rods) will sometimes completely destroy (melt) tha water pump.... tha tube also prevents tha discoloring of tha down...
  16. Dukedog

    200hp efi overheating

    " his thought was that exhaust gas was getting into the water pump " this is almost impossible.. water pump is in a separated part of tha motor..
  17. Dukedog

    200hp efi overheating

    when you replaced tha water pump did you install a "kit" or jus tha impeller?.. need ta replace all of it...
  18. Dukedog

    200hp efi overheating

    if you cut and install yourself tha length will be estimate.. it needs about 1/4" gap at both ends when installed.... these don't need ta be exact measurements...... are you getting any type of overheat alarm??? if not, i wouldn't think twice about it....
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