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  1. Dukedog

    high idle

    what year? efi or carb?..
  2. Dukedog

    Mercury 150 xl 2 stroke, carbureted, head temperatures vary by 15 to 25 degrees

    really.. gettin' an over temp warning buzzer?.. its an "open" coolin' system... are you takin' all these readings under a load at different rpms in tha lake or ona hose in tha driveway? been around a lotta V6 mercs ('76 ta '08, production and high perf.) and have never seen merc say tha 2 lbs...
  3. Dukedog

    Mercury blackmax 150

    tried to attach to your email.. says file is to big.. gives me some kinda geek instructions on what ta do.. will need ta get one of my kids ta explain what needs ta be done to send.. sorry..
  4. Dukedog

    Mercury blackmax 150

  5. Dukedog

    1995 200 black max xri HELP!

    send me an email addy and i'll send ya one in pdf..........
  6. Dukedog

    2001 Mercury 150 Saltwater Series (carb) midrange bog after extended running.

    if you have done all that other stuff (mech. fuel pump not mentioned) tha carbs are 'bout tha only thing left... sometimes a carb rebuild last years, sometimes weeks.... jmo.
  7. Dukedog

    2001 Mercury 150 Saltwater Series (carb) midrange bog after extended running.

    was this problem there before and/or after you did tha carbs???
  8. Dukedog

    Mercury black max overheats at higher rpms

    5 ta 7 is good.. 20 ta 25 may be a little on tha higher side.. look for at least 14 ta 18 on big end.. those are tha "normal" pressures.. i'd go with a poppet kit first.... not to pricey and new can't hurt nothin'............. jmo. jan... be sure ta "stake" tha new grommet in tha block...
  9. Dukedog

    Mercury black max overheats at higher rpms

    sounds like a poppet but you didn't say what tha water pressure (in tha lake under a load) was at idle and wfo or close to it?.... don't rely on tha gauge for an accurate temp reading........... number wise.
  10. Dukedog

    Metal shavings in reed block

    yeah, thats a wrist pin bearing.. usual aftermath of probable detonation/heat...
  11. Dukedog

    1998 Mec 150 black max

    tha pumps were added for tha roundy round racing boys.. acceleration off corners and choppy water.. they jus didn't work out as they were supposed to.. they have no effect on idle circuit up or down.. tha '95's didn't have pumpers unless they were some kinda "left over" item merc wanted ta use...
  12. Dukedog

    1998 Mec 150 black max

    pumper WMH carbs only lasted 2 years.. last of which was '92... they were a bust for regular boating use.. if your motor has these it is either not a '98 (should be WMV's) or they have been changed??? tha pumps can be eliminated without any repercussions to performance.. simply strip all tha...
  13. Dukedog

    Metal shavings in reed block

    tha "zero" along with "metal shavings" tells ya power head needs ta come completely apart ta find all tha damage............. then dollars will dictate what ya wanna do from there...........
  14. Dukedog

    Mercury Blackmax 150HP idle

    pictures without tha cowl.. sounds (terrible) like its only runnin' on "some' of tha cylinders?.. could be 'lectrical and/or carbs.. if tha "shop" gave it back ta ya runnin' like that i'd be askin' some questions?? but don't know what instructions were given to tha shop???
  15. Dukedog

    Is the high pressure pump constantly running..because when I test it is always is hot.. Is it not grounded or is it wired directly to the battery

    tha pump will only run with key on.. it should run a few seconds then cycle off if motor is not started.. it has a constant "hot".. tha + terminal will always show hot... its controlled (run or not run) by a ground from tha ecu...
  16. Dukedog

    2000 mercury 200 2stroke efi possible ecu issues?

    find yourself a different guy.. tha "kill switch" circuit kills everything ign. related not jus certain things (3 of tha 6 cyl's).. if ya have 3 cyl. firing is gonna be either stator and/or motor control module (not ecu) more than likely....
  17. Dukedog

    2003 Mercury 200 2stroke carb/Fast Beeping Alarm/2 stroke oil not going into the reservoir

    either and/or both of these two fittings may be tha problem.. pt# 424254.. this is tha one you are pointing to..its a 4 PSI check valve.. it doesn't need anything attached to tha empty barb.. pt# 8781051.. its right under tha starter.. its a "one way" crankcase pressure check valve fitting...
  18. Dukedog

    1989 xr4 150 that sat 3 years issues.

    that has tha vertical front and 16 amp stuff.... one of tha first XR4's... very clean piece! Mercnet says: MERCURY 2.4L 150XR4 ELPTO
  19. Dukedog

    1989 xr4 150 that sat 3 years issues.

    As for that fuel pump it comes on with the key then goes off. Then start the motor and it runs when motor runs. shuts off when pressure reaches its max.. thats a good thing.. havin' tha 16 amp pretty much tells me it has tha vertical front half on it.. all horizontal front XR4's i've seen were...
  20. Dukedog

    Mercury carb WME number.

    tha "stamped/engraved" number will also indicate tha jet size that corresponds with a certain horse power like faz says....
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