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  1. Q

    Mecury 4hp 4 stroke 2009

    Hi. Is there a gasket both sides of the carb ? One at air box and one going onto the face that carb seals to on engine side ? Other than that…have her one and a half turns out on the mixture screw. Open the throttle all the way. Choke on for a couple of pulls. Then choke off with full...
  2. Q

    Rebuilt 95 Waverunner GPIII won't fire

    Wouldn’t use starting fluid on that. Especially after a rebuild. Anyway. I’d make sure the fuel filter is going the right way. Easy to get the direction of the fuel travel wrong. I’d also pull the plugs and turn her over first with the throttle full open, then with it only a little open...
  3. Q

    Mercury 2.2 hp ignition coil

    I’ve had at least half a dozen of these wee things. Never had an issue with a coil. Always usually something simple. Double check your test procedure first off (if you don’t mind me saying so)…then I’d check the simple things associated. Like plug lead condition.
  4. Q

    Advice for Portable Fuel Tank Mercury 115hp Command Thrust

    Hi. I can confirm you won’t need a pressurised tank. I’ve ran my 115 CT from a normal remote outboard tank and even straight from a jerry can. I just had to buy another fuel fitting (one with red tab quick connect thing) and stick it on the end of the remote tank fuel pipe. These engines have a...
  5. Q

    2002 Mercury 150hp starting then splutters and dies

    As above about water sensor..or on a similar note, some smart craft systems have a water sensor on a pre filter unit inboard the boat. But almost sure the optimsx uses this smart craft plug for the oil sensor perhaps. Sure sounds like water, given the running description
  6. Q

    Oil dripping from front water outlet at the top of lower unit.

    Is it not just 2 stroke oil ? Can’t quite make out what the picture is off, given the description around the cowl as the location…but looks to me like that’s the gear box oil plug..anything down there is either gear oil or unburnt 2 stroke oil out exhaust exits. Gear oil stinks and burns the...
  7. Q

    Mercury 115 Tachometer Problem

    Is this a 2 stroke or modern 4 stroke we’re talking ? 12.anything bolts ain’t too great when running on either, but absolutely not normal on the latter. What voltage are you getting to the battery at idle ? If that’s healthier, back to the dash and assume poor connectivity
  8. Q

    1994 Black Max 175

    Is this on the trailer or in the water ?
  9. Q

    blackmax 200hp 1989 problems

    I’d say it’s more important that you don’t have continuity between ground and each of the three stator wires. Should be open circuit there. Testing between each of the three wires to each other, will show continuity I’d think. Unless your set up is different to what I’m familiar with. What...
  10. Q

    AQ 280DP Gear shifting not working.

    Just had an additional thought there. Assuming all is in order with the cable, mechanism and not in button stuck neutral mode at the remote..your 280 may have a slipping cone clutch. From wear or simply water in the gear oil. But you did perhaps mention that you think the mechanism isn’t showing...
  11. Q

    2 stroke Tohatsu engine

    I’d say you’ll have more luck…if you alternatively search for a 9.8hp instead.
  12. Q

    What's the best prop size? - 22 ft tahoe 228 Merc Alpha One Gen II 220 HP

    Hi. Probably prudent for me to throw in that the rpm range of the 4.3 mpi is actually 4400-4800. If that is what you have. I can also say that having messed about with a few boats with this mpi 4.3. I know that it is absolutely crucial to have them propped to see right to the top of the rpm...
  13. Q

    AQ 280DP Gear shifting not working.

    Hi. If you have the old original remote throttle and gear control, make sure that the button push mechanism (that you press in to allow throttle without engaging gear) isn’t pushed in and stuck in. It’s not unknown for the spring to fail and not return the button back out. Meaning it’s still in...
  14. Q

    3 trips out 2 ignition modules went bad

    I think the only way you won’t still need the ballast resistor in line…is if you have replaced the whole ignition system entirely.
  15. Q

    Vesselview 903 not showing Trim from 4.3MPI Alpha 2

    Yeah. You will absolutely require the analogue to digital converter module kit. If you want that to work, amongst some other features too. As she is…there is no trim position that will show on the smart craft.
  16. Q

    blackmax 200hp 1989 problems

    I’d maybe guess that you’re getting some sort of cross firing. I’d maybe look towards testing across a few places with a meter. Look for continuity where there shouldn’t be and continuity where there should. I might even be tempted to get her in a shed or garage…or under cover, turn the lights...
  17. Q

    Very Low Compessions on Mercruiser 5.0 MPI Engine. with Exhaust Manifold, Thermostat Housing Removed.

    I take a guess at there being some sort of sub surface event or similar, at some point. Which might be reason enough to guess further towards the valves being less than ideal at sealing. Somewhere between there and a head gasket, as suggested above, will be about right. Hopefully the Mpi...
  18. Q

    What's the best prop size? - 22 ft tahoe 228 Merc Alpha One Gen II 220 HP

    Good info there. I might just add (if you don’t mind)…that I’ve always been amazed at how well the ally k series white props perform. I’ve often known them to outperform some like for like pitch stainless props. Just such a good prop. Quite a fair bit of performance oriented design, cut and...
  19. Q

    Mecury 4hp 4 stroke 2009

    Easy as anything to remove and clean. God knows, you’ll soon be an expert at it, should you keep her for long. I ended up getting a little fed up with that 3.5 of mine. Any time I took it off the auxiliary (kicker you guys call it) bracket, back home and between use..then take back to the boat...
  20. Q

    Mecury 4hp 4 stroke 2009

    Hi...with a fair degree of certainty, I would suggest that it's the carb needing cleaned...or at least something related to it. I had a similar aged 3.5hp engine ages ago...it was a nightmare for needing the carb cleaned often. The gasket for the carb was also a weak point too. But more than...
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