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  1. Q

    Vintage 4 hp Mariner

    These are lovely things. If it helps you any…it’s actually a Yamaha engine you have there. Will be mid 80’s I’d say. If she has compression, she will absolutely run and do so for longer than you might do 😂. I have an array of old Yamaha engines in the garage from this era and around about...
  2. Q

    Mercury 25 HP EFI OR106999 & Up Fuel Problem

    I’d try to prune up the system as much as possible. What is the behaviour of the priming bulb like when squeezing ? Is the in line engine mounted filter going in the right direction ? Does that have the wee red tab quick connect fittings on it ? To make sure there is fuel getting to there at...
  3. Q

    Propeller Recommendation - 1998 Mercury Force 50 HP

    Your upwards of 33/34% prop slip if your numbers are right. So either your tacho is wrong or something us slipping badly in the drivetrain.
  4. Q

    Propeller Recommendation - 1998 Mercury Force 50 HP

    Prop looks just about the usual siort for that set up. I’d almost bet setting 12 pole 92 and newer, I read. What’s the adapter thing you mention ? Could your feed signal be off ? Or a bad ground ? 7k would be the gauge pinned max perhaps? Is it ? That will tell a story. If she was doing 7k for...
  5. Q

    Mercury 25 HP EFI OR106999 & Up Fuel Problem

    Ok. So given that info. I presume it’s like the newer fuel injection engines if a size that are available in pull start, with no need for a battery. This I’d also presume means that the power ti the fuel injection system is perhaps only present or generated, when the engine running ? The priming...
  6. Q

    Mercury 25 HP EFI OR106999 & Up Fuel Problem

    Do you get power to it as you turn the key to the first position ? Have someone depress the shrader valve on the rail with their finger (carefully) when you turn the key to first position. You should actually hear the pump run from close to the engine as you do anyway. I take it the fuel filter...
  7. Q

    Alarm capacitor 4.3L

    Probably. But the alarm tone shouldn’t stay on constantly with the turn of the key once. It sounds for a few seconds at most, then stops. On mine at least.
  8. Q

    Mercmonitor First Power Up - "Warning No Starboard Engine" (part 2)

    Can you show me the resistors you have ? Thanks
  9. Q

    Propeller Recommendation - 1998 Mercury Force 50 HP

    Hi Steve. Genuinely trying to help here. But I need to mention a thing or two first. So if you only go up one inch in pitch (even with more diameter), you are never ever going to drop the rpms to anything close to what you are aiming for. Nothing like it. I think it’s likely that your...
  10. Q

    Propeller Recommendation - 1998 Mercury Force 50 HP

    Hi. Not at all questioning you…hope you don’t mind if it appears so..but you mind me asking what kind of tach you’re using ? And the means of making certain, its calibration and value is accurate? Just asking to double check…I really honestly don’t think it’s possible for you to have seen 7000...
  11. Q

    Alarm capacitor 4.3L

    The alarm tone will normally be a second or two then stop, when key is turned once. If it stays on..it can mean a fault. Most commonly might be low gear oil in the header tank. Might that be having an influence on yours ?
  12. Q

    What does this marking mean on this new to me outdrive?

    Also a sound we Scottish make on occasion. Ach well ! Ach away you go ! Ach, I’m away for a beer or such like 😂
  13. Q

    What does this marking mean on this new to me outdrive?

    I’d say you’re right…but just having a wild guess at it. Thoughts around English being a second or unnatural tongue to the fella responsible…might perhaps mean he cares not an ounce for counter or anti preference
  14. Q

    Tilt and Trim Leaking

    Hi. There was a warranty recall service bulletin about this. I’m sure. The needle valves were below par on the early couple of years on these. Countless had their whole trim pump replaced under warranty and some got an upgraded valve set to replace the defect original set. There was even a...
  15. Q

    Won't shift into reverse or neutral

    I’d check the cable is actually still joined at both ends. Look at the engine end and see if you can shift by hand.
  16. Q

    What does this marking mean on this new to me outdrive?

    What if the guy who removed it and marked it…wasn’t too clever at spelling perhaps… Marked it AK for Anti Klockwise ?? Not totally sure, but might there have been the rare occasion that some of these had the lower internals arranged to run a left hand prop rotation? Might explain the bargain...
  17. Q

    Mercury 150 optimax

    If it was the limiter for over rpm…it’s very obvious. The rpm drops with a sudden ignition cut. Then rpms lowers. You’ll climb again and same thing.
  18. Q

    Mercury 150 optimax

    Ok. Could be an overheating for sure then.
  19. Q

    Mercury 150 optimax

    You sure it’s not an over temp alarm ? That’s what I was maybe hinting at. If you only have an audible alarm to go by. But if you are saying that the smart craft gauge is visually indicating an over speed..that’s different of course.
  20. Q

    Volvo Penta 5.7GSi Running Rich, Strong fuel smell

    First thing I’d be thinking is certainly around fuel not getting burned too. Although all ecu governed injection engines will run rich when cold..you’ve compared the visual and sensory symptoms with another identical engine. If the two engines are fed from the same fuel source and not separate...
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