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  1. Q

    Mercruiser 5.0 Mpi issue

    Thanks very much for this fun times. Really appreciate it. After a proper read today, seems I have a few things to consider when I get to the boat
  2. Q

    Mercruiser 5.0 Mpi issue

    Very interesting stuff there. Lots to consider there
  3. Q

    1985 Black Max 150 Hp Leaks oil out of reservoir cap. I replaced the cap and still leaking.

    Hi duke dog. I may stand to be corrected, but as far as I understand it, there are slight variances in the design between these particular motor’s pump design…compared to say a similar or slightly later era 3 cylinder 90hp for example. I’ve just known of far too many in the local to go wrong...
  4. Q

    Mercruiser 5.0 Mpi issue

    Haha. Great advice at the end there. Brilliant. Yeah. To be fair. That’s a really good point it wouldn’t be the first time it hasn’t seated too well in the past. I’ve been one of the biggest critics of this design on here for years now. You might just be right about that causing a little...
  5. Q

    Mercruiser 5.0 Mpi issue

    Thanks Stinnet. I’ve had her for about 10 years now. Went through about 5/6 diz caps over the years. She hasn’t been in use for a few years recently. Really need to get back to have a look at her. But fearing the worst for her. I’ll report back when I get a proper look. In the meantime, I’d...
  6. Q

    Mercruiser 5.0 Mpi issue

    Hi all ! Has anyone previously known or came across a situation where the shaft on the distributor appears to be bent or off centre ? It was dark and not thoroughly looked at properly at the time. The boat is not currently anywhere near me and haven’t been back to it since. But a Quick Look at...
  7. Q

    1985 Black Max 150 Hp Leaks oil out of reservoir cap. I replaced the cap and still leaking.

    No worries. Best of luck. But honestly…I’d strongly urge you to do away with it altogether. Absolutely well known for failing horribly these things. Totally up to you of course. Best of luck either way. All the best.
  8. Q

    2017 115hp efi fuel issues please help

    Hi. Simple thing to check out. If you have the wee round quick connect fuel line connector with the wee red tab that goes into the engine..they can be known to have the internal o ring seal perish very quickly (with the ethanol fuel these days). Happened to my 2016 115. Means they can draw air...
  9. Q

    1985 Black Max 150 Hp Leaks oil out of reservoir cap. I replaced the cap and still leaking.

    I’d absolutely say (from horrible past experience personally and knowing of many others who suffered the same), that you should almost certainly do away with the oil injection system on that engine anyway. Wouldn’t normally say such a thing about most other injection systems on mercs and Yamaha...
  10. Q

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Fair play. If that compression is accurate, it’s a fairly lofty set of figures for sure. Best of luck.
  11. Q

    Intermittent Start Issue

    Outwith the most likely cause being battery/connection/earthing/continuity issues…I’d maybe just quickly make sure she isn’t getting intermittently hydro locked. Hopefully not…but just make sure I’d say. Maybe being fussy and pedantic around your account of 12v being evident….but if you are...
  12. Q

    Why is gear oil leaking out of lower unit when running?

    Not sure that’s actually oil. If it is..make sure you aren’t overfilled in the sump. Was she fogged before winter and maybe that’s all it is ? Other than that, maybe your muffa aren’t sealing right and it’s aerated water ? Possibly some salt water gunk perhaps otherwise ?
  13. Q

    Constant ringing noise from throttle when motor is running.

    Hi. Outwith the chance of high temperature, I wouldn’t assume that the alarm isn’t for oil, just because it appears to be burning it with smoke. If your oil is low, it will alarm too.
  14. Q

    1985 mariner 40hp service manual

    That’s maybe a Yamaha engine I’d think. Might be an idea to post in the Yamaha section under the guise of the identical Yamaha version
  15. Q

    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    At the risk of being mr pessimist…first thing I’d do, is rule out the likelihood of anything nasty, by doing a compression test on the engines. Hate to say it…but those things have a nasty habit of not holding together too well..out with the exceptional few examples that have been meticulously...
  16. Q

    Question about water in bilge

    Outwith the bellows or drain plug leaking… A source of water on boats like this can often be a head scratcher at first…but then at some point, it’s common to find that the water has been in the boat all along. Just that it’s sat un noticed up forward, in a storage void, ski locker or similar...
  17. Q

    Am I under proped?

    If it’s genuine doing 5000 rpm…it won’t be great for a 3.0 maybe. Very few 3.0 18ft boats will require a pitch of more than a 21”. There are some, but not many.
  18. Q

    A prop question (enertia or other versus older props)

    Hi. Couple of things from me. So that enertia prop in particular, at that size..isn’t the normal enertia prop. That’s almost certainly the enertia eco prop. They have a huge diameter in comparison. So much so, that should you have a trim anode fin or similar on the drive, it will contact it...
  19. Q

    NEED A VP PROS OPPINION!

    The usual distributor cap will throw its hand in at some point for sure. But good engines.
  20. Q

    Prop Help

    It’s not an XL I’d say anyway
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