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  1. ukstu

    AD41 loss of power to instrument panel

    Hi all. I’ve a Volvo Penta AD41 linked to 290 DP. Today I turned ignition on so that I could trim up drive leg, as I pressed trim button I lost all power to the instrument panel. The other engine, trim and all other power to the dash remains. Could anyone advise on where to look please?
  2. ukstu

    Volvo AD41 non marine equivalent

    Hey all. Does anyone know if there is a non marinaded version of the AD41, ie is the block used anywhere else that anyone knows of under a different name/title? I know that many petrol engines are just marinised versions of common motors but can’t find anything anywhere for the AD.
  3. ukstu

    Strange running

    Hi all, I’d like some advice and thoughts if possible please. I have a new ( 5 hours) 5.7 Mercruiser Alpha one with gen 1 drive. I’m having some strange problems at what seems to be completely random stages. Engine starts and runs fine with good power but occasionally, it will lose power, it...
  4. ukstu

    5.7 fuel issue ( I think)

    Hi all, I have a Mercruiser 5.7, Electronic fuel pump, Rochester 4BLL carb, Thunderbolt ignition, Alpha one gen 1 drive leg. This season i have had trouble with the carb draining down during long gaps between use (even though i thought i had sealed the well plugs last winter during...
  5. ukstu

    Slight leak advice

    I have a slight leak of water in through the top of the drive. Hopefully there is a picture attached, could anyone share any advice on what to do about it? It is very slight, literally just getting damp when the engine is running. No leak when not running. thanks
  6. ukstu

    Replacement engine spark plugs

    Hi all, Some advice please if you could. I had a new engine fitted last year, all running well. unfortunately, I cannot find a serial number of the engine anywhere. I have looked in all the places it should be. whilst the engine was new, it was dressed with parts from the old one that came out...
  7. ukstu

    Leaking carb

    Hi all, I have a fuel leak from my carb. Enough to form a small pool in the top of the manifold. My initial thought is it will just be a poorly fitted gasket, however, you will no doubt know better than me. move attsched a picture to show where it seems to be leaking from (No’s 1&2, and pooling...
  8. ukstu

    Merc 5.7 bogged down under load

    Hi all, I hope you may be able to offer some advice please. Engine is a Thunderbolt 5.7. Just lunched the boat for the start of the year. Took for a quick run and it’s really bogged down, no power. It rev’s freely in neutral and ram up on the muffs no problem. If i coached it up through the...
  9. ukstu

    Alternator belt screeching

    Hi all, Some advice if possible from your knowledgable selves. I have a 5.7 Alpha one. I’m getting the screeching noise from the alternator belt, one chewed up last year and threw itself off. ive tried adjusting and re-aligning but can’t seem to stop the noise ( and the fact that it is clearly...
  10. ukstu

    New engine run in

    Hi All, I have just had a new engine fitted as a blocked drive leg killed the last. Anyway,.. could anyone please advise on what the run in procedure for a new engine is please? ie. running hours at what revs and so on. Engine is a Merc 5.7 Vortec. ( So far, i do not know what the vortec means...
  11. ukstu

    Mercruiser 5.7 Alpha 1 overheat

    Hi All, I'd appreciate some of your advice if possible please. I have a 1991 Mercruiser Alpha 1 with approx 700 hours on that is used on salt water in the UK. I went out today and about half hour into our journey it overheated. I shut the engine down and awaited a tow back in. After about 2...
  12. ukstu

    Mercruiser Alpha one 5.7 Valve adjustment

    I'd like some advice from you that know better if possible please. I've had both heads off and am in the process of rebuilding. In the past, i have had problems setting the valves, no matter how i follow instructions etc.. I am under no illusion i am doing something wrong but can't figure out...
  13. ukstu

    Mercruiser 5.7 problems

    Hi all, I have read this forum for some time but never registered so first off, apologies for the first post being to ask for help. I currently have a Mercruiser 5.7 V8 with Alpha one (1989-92). I have had this engine for coming up 5 years. I have had an issue with moisture in the oil for a...
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