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  1. Q

    Vibration at low speed

    Don’t suppose the balancer shaft and wheel is loose ?
  2. Q

    cant find out the year of 90hp yamaha

    Definitely.
  3. Q

    2015 115 Merc on 20' pontoon

    Ct makes a huge difference. Just about every test they’ve done, if not all…has the ct outperform the normal version. It also runs the larger performance props available too. It even outperformed the 125 optimax in tests too.
  4. Q

    cant find out the year of 90hp yamaha

    Why are you bothering to reply with such a silly and rude comment ? There are at least two charts that tell us the year of these, going by the number in bottom right. It depends on where you live (or where the engine was supplied) .as to what chert to use.
  5. Q

    cant find out the year of 90hp yamaha

    Yeah
  6. Q

    Volvo Penta 4.3 GL-A Cutting Out After Idling

    Fair play Bruce. Although I thought for some reason, that the ,gla was the exception to this. Not sure why I think that..unless it was a hybrid thing I’m thinking of previously
  7. Q

    Volvo Penta 4.3 GL-A Cutting Out After Idling

    Check the connection at the oil pressure switch that activate the fuel pump. I’d also have a look at the automatic choke too.
  8. Q

    cant find out the year of 90hp yamaha

    Over here at least…the year can be told by the letter that’s down the bottom right corner of the serial tag plate. Letter on its own bottom right.
  9. Q

    2015 115 Merc on 20' pontoon

    I’d suggest that you probably should have been sold the CT gearbox version of the engine.
  10. Q

    New to me Lazer II with 3 square PVS vent holes

    Hi. That’s the old original laser 2 you have. There was a later laser 2 made that had the round pvs holes that we see most often these days on the current merc props. The later ones like this are getting hard to get a hold of these days. Weren’t made for too long before they stopped making the...
  11. Q

    2018 Mercury 2.1 75hp 4 stroke vibration

    Glad to hear it. Good you’re now reassured
  12. Q

    2018 Mercury 2.1 75hp 4 stroke vibration

    There is a guy on YouTube that has a good guide. It’s the same as most mercs that age. Mine was spotless to be fair. Even after 400 hours
  13. Q

    break in

    id run it easy for the first hour, but on load and low rpms...then after that...run her up at most rpms apart from full throttle for the remaining hours...most importantly...never at the same rpm for too long...vary the rpms often...but I also agree with racer on this...as long as you go easy...
  14. Q

    Ford 302...21 foot fiberglass with cuddy

    I’d try a 3 blade 17”…just in case.
  15. Q

    2018 Mercury 2.1 75hp 4 stroke vibration

    I’ve found it’s a good idea to change the oil a little more often than normal too. Just because they run so cold. Well here at least anyway. They hold about 5-5.2 litres of oil including filter I’ve found. There is a wee fuel strainer in the injection rail too, that’s good to clean out every 300...
  16. Q

    2018 Mercury 2.1 75hp 4 stroke vibration

    Yeah. Quite sure of it. Sounds and looks exactly like mine on a cold start when I had old steering fitted. Then after a few mins they settle down and don’t move. Almost silent running too. Amazing engines I think. I’ve got mine on a 19ft deep v cuddy. So powerful too. It’s a CT model. Just...
  17. Q

    2018 Mercury 2.1 75hp 4 stroke vibration

    Probably needs a good run too. They run very cold temperatures I’ve noticed also.
  18. Q

    2018 Mercury 2.1 75hp 4 stroke vibration

    Hi. So I have the same engine as this (well the same base engine…mine is the 115 version). When she is cold and on a warm up…they tend to do this a little. Especially with a cable steering set up with a little play in it. I’d think that is what’s happening to yours. I fitted baystar steering and...
  19. Q

    Ford 302...21 foot fiberglass with cuddy

    Are you getting that with trimming the boat up etc ? What gps speed you at with those rpms
  20. Q

    7K.-

    There were a couple of Europe car derived VP engines to be fair. One that comes to mind that had a higher than usual rpm range would be the 16v 4 cylinder aq 171. Terrible in a boat with its failing cam belt and not being suitable for the marine world…but sure did pull some revs. Not sure it was...
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