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  1. Dukedog

    Merc 150 efi rev limiter

    A10 was in '96... merc was not real consistent with QC on their ecu's.. should be a "ruff" estimate on tha serial tag on tha clamp.. lotsa factors come inta play with max rpm so take it with tha typical grain a salt.............
  2. Dukedog

    Sport Jet 175 x2 with low compression

    ............. that motor has "electrionic" electrical junk.. it has a single box that replaces switch boxes and it also has an electronic ecu.. these can be a PIA ta diagnose ('specially ona computer)... you need to go by what your manual (if its tha right one?) tells you ta do for carb...
  3. Dukedog

    Sport Jet 175 x2 with low compression

    "I have tried a number of things, but just can not increase the idle." what have you tried?.. do you have an OEM manual for it?
  4. Dukedog

    Mercury kill switch wires

    Thought about installing kill switch but not sure how to wire it. after you get tha black/yellows straightened out you can install a "kill switch", between tha SOLID BLACK goin' to tha key switch and tha BLACK/YELLOW leavin' key switch.......
  5. Dukedog

    8-pin cable plug harness

    JAN.. that harness has nothing ta do with tha way a motor runs.. tha only thing it controls "as for its running" is it has a start circuit and a kill circuit.. it cannot change tha way, rpm and/or speed of tha motor.. it simply allows ta be started and/or shut down................ if it was...
  6. Dukedog

    150 EFI ongoing issue

    there were a few that said they could do it.. what i saw was some that could repair tha pump driver circuit (with success) and some that claimed ta be able change tha fuel map and raise tha limiter in some (not so successful).. i had a coupla of 'em done back in tha early 2000's without much...
  7. Dukedog

    1985 mariner 150

    yes, it will.... jus don't make a habit of doin' it.... normally bad high or low side of stator will not cause it ta die.. if high side is bad it will usually run jus fine up ta 28/3000 and jus quits pullin' but still runs at those rpm jus fine...............
  8. Dukedog

    1998 200 carb 2,5L

    jus unscrew it.. there is NOT an open hole in tha head... plug tubes on carbs... why ya wanna do away with it??? jus curious???
  9. Dukedog

    1987 MERCURY Black Max SR2

    "That was one of the differences" about tha only one that makes any difference..............
  10. Dukedog

    1987 MERCURY Black Max SR2

    tuner configuration/length....
  11. Dukedog

    1990 Merc 200hp xri efi

    it should NOT...
  12. Dukedog

    Fuel running out of carb when primer bulb is squeezed. Cleaned my carbs and the issue persists.

    find another WH-41 if your convinced tha "rebuild" did not take.. it happens with some of 'em for whatever reason.. been thru it myself with a few..........
  13. Dukedog

    1987 MERCURY Black Max SR2

    base 150 and XR2 150 are very much same thing.. XR2 uses different carbs, divider plate and tuner.. these will add a coupla hundred rpm to wot depending on your boat and how its set up... XR2? its more of a "marketing thing"... is it worth tha difference??? its up ta you.. with your boat...
  14. Dukedog

    1991 mercury 200hp EFI Black Max XRi

    check and/or rebuild mech. fuel pump for starters... could be a coupla other things also...
  15. Dukedog

    98 xr6 150 backfire issue.

    i have no sound with vid???
  16. Dukedog

    Fuel running out of carb when primer bulb is squeezed. Cleaned my carbs and the issue persists.

    you need ta revisit tha carbs.. do not re-use any of tha gaskets no mater how good they look... replace tha needle and seats.. double check float heights....
  17. Dukedog

    Mercury Black Max XR2 150

    has tha 16 amp chargin stuff.. individual regulator and rectifier.. it seems like its jus enough ta keep up with tha main starting battery if ya runnin' very many electronics.. for years and on 90% of all tha mercs i've built/had i ran tha 16 amp stuff with jus a rectifier without any problems...
  18. Dukedog

    98 xr6 150 backfire issue.

    a "backfire" is almost always a wire/wires (usually at a switch box) made up wrong and/or timin'.............. jmo
  19. Dukedog

    Mariner 150 2 stroke need help please!

    tha motor looks ta be an '83.. its second gen power head but still has single cylinder TnT.. you need to find an OEM manual for it... by your own words your lost on what and how to do stuff on that motor.. there are no adjustments to those carbs.. they have an "idle circuit and an off idle...
  20. Dukedog

    1989 xr4 150 that sat 3 years issues.

    production stats are 143's... i always liked "controlled heat" 160 ta 170.... but i didn't string my junk out for miles n miles....
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