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  1. Fun Times

    496 Mag HO RPM issue

    Because the available power is at 100% would start to tend to lead me off of this being a general common sensor type issue as they would normally show and reduce power as felt needed within the PCM plus sound a warning horn in most cases... With possibly 2 exceptions that sort of comes to mind...
  2. Fun Times

    496 Mag HO RPM issue

    Sort of wounding what the available power percentage read on both engines? + maybe the throttle percentages... Every thing seem equal on the live engine data while scanning? What’s the back history of this situation.. Boat new to you? Any type of service work done then all of a sudden you...
  3. Fun Times

    Longshot help for friend, '98 EFI fuel check valve?

    Merc had some weak check valves in that year range...Here's some study guides for you Mike. http://boatinfo.no/lib/bulletins.html#mercruiser-service-1998_04 http://boatinfo.no/lib/bulletins.html#mercruiser-service-1999_08 http://boatinfo.no/lib/bulletins.html#mercruiser-service-2000_05...
  4. Fun Times

    2012 3.0 merCuiser oil sending unit

    Item numbers 27 and 28, Electrical Components https://www.mercruiserparts.com/3-0l-mpi-ec-1a072812-up 1A649550 ='s MERCRUISER 3.0-MPI (EC) WPS 3.0L ALPHA Model Number 41510P5UU.
  5. Fun Times

    Help Identifying Parts for Replacement (Oil and Fuel Switch)

    Sierra marine Sender # 18-5899 cross references to Merc numbers 982650, 815425T so you'd be ok to give it a go.
  6. Fun Times

    MerCruiser 4.3 Fuel Problem (I think)

    0F065795 comes up as an 1993 4.3L ALPHA, TB4, W/PS, TWO-PC-Exhaust, WORO, (262 CID) (GEN II) Model number 443B1003S... Here's a parts catalog for the engine, https://www.mercruiserparts.com/4-3l-gen-ii-2-bbl-gm-262-v-6-1993-1-1 Plus to add a few thing of what tpenfield mentioned, maybe check...
  7. Fun Times

    Alpha 1Power Trim Question

    The notes are just below item number 11, https://www.perfprotech.com/mercury-marine-parts-catalog/drive-unit-chart/assembly/2203/10?umodel=25874 But also just for reference points in your studies , see 1 - 10 as you scroll down
  8. Fun Times

    Alpha 1Power Trim Question

    To try and start the help here, 'The website you were searching, did it happen to have the reference "notes" as maybe it will help here some. TRIM CYLINDERS AND HYDRAULIC HOSES DRIVE UNIT CHART Notes 1: If trim cylinder casting numbers are 98703, 98704, 98703-1, or 98704-1, (Trim cyl. tube...
  9. Fun Times

    Help with gen III cool fuel module

    There's an o-ring in there at the end of the fuel line so you may want to try adding a little bit of oil (or lube of some kind) in there to help remove the fuel line as the book mentions the following guide line, Step # 11. Carefully pull the fuel outlet line straight out from the module, and...
  10. Fun Times

    Mercruiser ECM Failed?

    Devastating news and yes that seems to be a new, unusual type of failure and your concern is valid. Someone is going to have to thoroughly go over all the wiring circuits that pertain to that part of the entire system which I believe is tied into the CAM Shaft sensor too as they share certain...
  11. Fun Times

    Help Identifying Parts for Replacement (Oil and Fuel Switch)

    Please post your serial number t help confirm a perfect engine/parts match-up but item numbers 41, 42, 43 are what you'll be needing, https://www.mercruiserparts.com/bam/subassembly/31875/11741/40 https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313&_nkw=22-864669&_sacat=0
  12. Fun Times

    Gen 2 ccw rotation confusion / lower unit shift lever install...

    With this project your going to need the service manual to help get this back together which I was able to locate one for you as section 3-C covers the left hand rotation. See manual pages 3C-58 (<Web page 312) + 3C-63 (Web Page 317)...
  13. Fun Times

    Gen 2 ccw rotation confusion / lower unit shift lever install...

    Alpha Models - Drive Unit Installed IMPORTANT: Shift cable adjustment for a right hand (RH) rotation drive unit is different than the procedure for adjusting a left hand (LH) rotation drive unit. Be sure to refer to the appropriate procedure when performing the following steps. IMPORTANT: Drive...
  14. Fun Times

    volvo AQ125B overheating while on plane

    + 1 with kenny nunez as he has you heading in the right direction.(y) Most likely as it fits the most common description. Here would be your parts catalog which helps as it covers both the engine and drive for these models,:cool: Marine Gasoline Engines for AQ125B - 7744630 -...
  15. Fun Times

    Vesselview-broke one of the small metal tabs in the plug on the motor side

    Yes you/one should be able to replace the pin Connection. For many helpful tips you may want to try searching online first under 'Image' - "Wire Harness Female Pin Terminals Electrical Connection to see if you can identify the type of design you're dealing with then while still searching Wire...
  16. Fun Times

    Holley carburetor identity list 6317-1

    R-6317A 1971 Ford Marine, 302 Eng. CK6 F053 CM006 I suspect it may be these 2, https://www.carburetion.com/CarbNumber.asp?Number=R6317-1A https://carbkitsource.com/numbers/Holley/index7.html But to maybe help confirm, What engine model, serial number and year if possible is...
  17. Fun Times

    1989 mercruiser 5.7 ignition

    Do you happen to know if maybe spark is coming out of the coil wire/tower directly? or just you're checking at the spark plugs themselves only? own a timing light? for quick first reference test you could try using the light to see if there's any flashing while hooked to the high tension coil...
  18. Fun Times

    1994 mercruiser 454 What oil/filter to use

    Do you happen to know the engine serial number in case you'd like a parts catalog for reference points? The oil type and filter is almost endless for these engines and almost turns into personal preference.... If he ran 10-40, personally I'd try to keep it the same. 1 866340Q03 Newest...
  19. Fun Times

    PMGR starter,

    Mercury-Mercruiser 50-863007A1 Starter Motor Assembly https://www.mercruiserparts.com/863007a1-starter-assy What year plus engine serial number is yours?
  20. Fun Times

    Bravo 3 with open exhaust bellow, running with drive up?

    If the boats on the trailer then you could make sure your max trim limit pin to pin height is set to 21 3/4 inches up/out as noted like below for you if desired... 805320A1 TRIM SENDER AND TRIM LIMIT SWITCH KIT
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