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  1. Dukedog

    Mercury 150 Black Max ~1992 year model

    not sure on how big ya can go.. maybe up ta 60 over?.. would need a jet increase anything over 15/20 though.. jmo... stay away from Wiseco's though.. tweakin' involves motor height, set back and prop.. no play in steering at all is a must... would need that offset plate ta do any...
  2. Dukedog

    Mercury 150 Black Max ~1992 year model

    your 2.0 motor is built off same block as any 2.5.. jus has 2.0 sleeves.. everything, except sleeves, including block exhaust openings are tha same... BIG DIFFERENCE IN PERFORMANCE with tha 200 on tha F&S ProCraft... would take some "seat time" and set up tweaking ta get a handle on it in my...
  3. Dukedog

    Black Max 150 overheating and water pressure

    pulling tha PH is usually last resort if all else fails.....
  4. Dukedog

    Black Max 150 overheating and water pressure

    where is tha pressure gauge hose attached to tha block? in tha poppet assy. there is a plastic disc.. it will become slightly "warped" that is seldom noticed unless someone mentions it.. it can cause a "sticky situation"... we would fab new ones with a piece of aluminum or thin stainless stock...
  5. Dukedog

    2002 Mercury outboard power loss

    this kinda points to a prop hub problem???
  6. Dukedog

    Black Max 150 overheating and water pressure

    justa 'bout any aftermarket manual is gonna suck.. jmo. part no. OEM.. 90-976583... 100 bucks from a dealer but might try ebay? thats sticker shock i know.. but if ya gonna do these things yourself it will put ya $$$ ahead....
  7. Dukedog

    Black Max 150 overheating and water pressure

    3 ta 7 lbs is plenty.. depends on idle rpm....
  8. Dukedog

    Black Max 150 overheating and water pressure

    gotta disagree with chris.. 40 lbs is gonna be high on this one.. i would venture ta say 17/18 lbs is 'bout "average" for tha merc V6.... i'd start with poppet.... complete "kit". there are two designs (old and new) for tha poppet.. you will need ta identify yours by how many bolts hold it to...
  9. Dukedog

    temp beeper mercury 115 1991

    purple comes from key switch.. ANY purple ANYWHERE in tha boat and/or on tha motor should come hot with key "on"............... it is tha only switched hot...
  10. Dukedog

    temp beeper mercury 115 1991

    "Researched and decided other wire connects to very short, hanging exsposed purple wire end coming from keyed ignition. I was optimistic. Nope, not working. " that purple should become "hot" when key is on.. it should sound when you ground tha other wire no mater where it comes from as long as...
  11. Dukedog

    1995 Mariner 175 EFI no power when in gear

    here's a list of a few things...... compression dirty/non firin' injectors mech fuel pump fuel lines ecu 'lectric fuel pump/regulator lectrics.. trigger, stator, switch boxes spark plugs/wires idle stabilizer module linc n sync... all justa start! water pump needs ta include base and housing...
  12. Dukedog

    2000 MERCURY 2.5L EFI 2 STROKE

    tha "beeps" at first turn of tha key are self test beeps for tha oiler warning module.. if oiler is intact and being used ya gotta oiler and/or module problem if they don't sound... sounds like ya might have a bad sensor on tha float.. are you holding tha float down for a minute or two...
  13. Dukedog

    Mercury 150 Black Max ~1992 year model

    over temp sensor is right below #1 spark plug.. will be "one" tan or tan/blue wire.. temp gauge (was an option on that motor) sensor will be a "two" wire sensor right below #2 sparkplug.. tha idle timing can vary quite a bit when first starting after complete linc n sync.. "finale" idle...
  14. 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...
  15. Dukedog

    Mercury 150 Black Max ~1992 year model

    ???
  16. 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)...
  17. 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..
  18. Dukedog

    Did my lower unit get damaged?

    jus make sure tha shift shaft stays in place when ya pull tha seal out..................
  19. 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...
  20. 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...........
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