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  1. Dukedog

    Powerhead interchangeability

    tha '91 and up is a different block like faz says.. tha three main differences (All hp's) in tha '90 down and tha '91 up are tha block, heads and exhaust divider plate.. those parts will not interchange.. i've run '91 up blocks on tha "2.0' liter" (135/150 hp) 90' model down (your motor) adapter...
  2. Dukedog

    Mercury 150 Black Max ~1992 year model

    ???
  3. Dukedog

    Powerhead interchangeability

    thats jus a "brutal way" of tellin' ya ya gettin' some lame advice from somewhere.. unless ya come up with it on ya own.. faz, ya outta be ashamed :)) jus a coupla questions?.. ya looking for a complete, runnin' powerhead or justa "long block" type deal.. they will all (2.0. 2.4, 2.5's)...
  4. Dukedog

    Motor slow acceleration then overheat

    jus tha impeller?.. needs complete pump kit.. might consider a poppet kit also.. comp is a little low but that may easily be your gauge..
  5. Dukedog

    Did my lower unit get damaged?

    jus make sure tha shift shaft stays in place when ya pull tha seal out..................
  6. Dukedog

    1988 Merc 220 xri...maybe a dumb fuel injector question?

    injectors fire in pairs by ecu. 1 n 2, 3 n 4, 5 n 6.. if a single injector is suspect they should all be checked, cleaned and flow tested...
  7. Dukedog

    Mercury 175hp timing issues

    stator (9 and 16 amp) position really has no particular clocking.. jus usually between 3 o'clock and 6 o'clock.. wherever you can get screw holes ta line up...........
  8. Dukedog

    85 merc 200 black max overheat alert

    there's your answer.. or wire somewhere? disconnect tha sensor at term on motor and test.. by that i mean turn tha key..
  9. Dukedog

    85 merc 200 black max overheat alert

    how long, after start, does it take for tha alarm to sound?
  10. Dukedog

    200 black max.

    agree with faz.. but tha '91 is probably gonna be a 2.5 steel sleeve motor.. some (most) of tha power head parts are gonna be a little different compared to tha other two....
  11. Dukedog

    Mercury 2 cycle alarm

    beep, beep, beep, beep, beep OR beeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeep? do you know tha difference?
  12. Dukedog

    1991 mercury 150 outboard black max

    first of all, "why did you get (decide ta work on it) into tha motor ta start with???".. when you rebuilt tha carbs were new gaskets used throughout including new accel. pump parts?.. was a link n sycn and timing done?... does it help if primer bulb is pumped when trying ta keep it running...
  13. Dukedog

    My 1997 150hp rebuild

    reed plate has got to be removed... you have 8 3/8" down tha middle each side of main bearings.. 10 5/16", three on each outside edge, 4 holding top bearing cap. 4 1/4" holding bottom bearing cap.. sometimes you need a mallet to "tap" it in a few places ta get it to break loose
  14. Dukedog

    150 two stroke black max

    '88 2 liter 150.. thats a "zero" not an O.
  15. Dukedog

    1991 Mercury XR4 low rpms at WOT

    start point.. boat level, motor level... center of prop shaft 3 1/2 inches below pad....
  16. Dukedog

    Mercury 175 EFI Boggs down under load

    send me an email addy and i'll send ya an OEM manual (pdf)..... your motor should have tha water cooled rec/reg?.. i may not have tha test for it?
  17. Dukedog

    Mercury 175 EFI Boggs down under load

    swap switch box leads from 1 with either 3 or 5.. see if fire fire pattern follows? sounds like a coupla switch boxes are in ya future.. maybe stator also.. wouldn't worry 'bout plugs.. i can say i've never had a surface gap plug go bad with any merc...
  18. Dukedog

    Mercury 175 EFI Boggs down under load

    do ya have access to another gauge?.. 90 lbs is tired/low.. how are ya testin' comp?
  19. Dukedog

    1991 Mercury XR4 low rpms at WOT

    1.87 gear? has it been changed?
  20. Dukedog

    Mercury 135 Blackmax

    something is wrong with middle carb.. tha feed for carbs go through each carb from top to bottom.. if its before carbs it would effect all three..
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