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  1. Q

    496 mag HO double beep alarm

    Iac would be the usual suspect for that.
  2. Q

    Fuel pump “over spraying?”

    Hi. Not totally familiar with this engine. But I know my GM mpi overfuels plenty when it’s cold (and because of cam..but that’s a whole other story). If your temp sender is thinking it’s cold..it will over fuel constantly. Is your temperature showing too cold perhaps ? Is this one of the newer...
  3. Q

    gearcase lube won't pump past valve assembly

    Hi. As eluded to above. You only pump it in until it comes out the vent hole. Then close everything up tight. Then you top up the reservoir bottle from the engine bay. First few runs out…it will drop in level to take up the void space between that and the vent level. Just top it up again until...
  4. Q

    2021 Mercury 115 Pro XS cavitating

    No worries. Let me know how you get on. Keen to hear how that lovely set up performs too. Is it a CT gearbox? Presume it must be, if you are running a tempest. I run a tempest 19 and enertia 20” on mine.
  5. Q

    2021 Mercury 115 Pro XS cavitating

    Have a look at the plugs. I think it looks like one is holed and one isn’t. Hard to tell. But even at that. It would be worth trying the solid plugs. I know for sure that my 115 didn’t like them holed at all, with her sitting about one inch above the lower hull. Yours looks at least that. It...
  6. Q

    2021 Mercury 115 Pro XS cavitating

    Yeah. I’ve had a few props vented previously. Didn’t like it much. But one of my boats has the same engine as this and an inch high on the set up. I tried the smallest vents on a prop with more pitch than I normally run. It doesn’t start to seal the vents until nearly 4000 rpm on it. Total pain...
  7. Q

    2021 Mercury 115 Pro XS cavitating

    Yeah. Hard to tell. But sure looks like one is and one isn’t. Despite that..the vented one will be causing the affect described in the original post.
  8. Q

    2021 Mercury 115 Pro XS cavitating

    Look at that first picture again. The lower one has no plug in it. You can see the lip it should sit against when it’s in place. Totally missing, looks like. Edit***lower one looks like it’s there but is vented. Other one is full bore closed. Weird
  9. Q

    1989 9,9hp Mariner 2stroke starting Issues.

    Fair play. Maybe splitting hairs perhaps. Not the traditional choke perhaps, but you know what I mean. It just squirts a bit of fuel in there when you pull it out. Some call it a choke primer. I’m sure you knew what I was referring to. I get what you are saying though. Fair play.
  10. Q

    Penta 5.0 GXI overheating

    Hi, does this have a oil cooler on the line between the inner transom and water pump on engine pump ? down low on port side usually. These can be the cause of issues, when they are perished and drawing air
  11. Q

    1989 9,9hp Mariner 2stroke starting Issues.

    Yeah there is...you pull out the fast idle knob for the choke...
  12. Q

    1989 9,9hp Mariner 2stroke starting Issues.

    Hi...I had one of these from a few years later..started really well...but there is knack to it for sure.. I found that it started best with choke out and some throttle for first pull or two...then she will kick...turn choke off, pull again with throttle and she will go...If you keep the choke...
  13. Q

    2021 Mercury 115 Pro XS cavitating

    In fact...looking again...it actually looks like (on picture 3) you have one hole (top of prop in picture) with a plug in it, an one hole without one at all (bottom of prop in picture) defo the issue.
  14. Q

    2021 Mercury 115 Pro XS cavitating

    Hi...Just looked on the laptop there, at the pics...you have no vent plugs in that prop at all...That is 100% your issue. The 3 holes you have there (one between each blade at the forward end of prop) should have some form of PVS black circular plugs in there. from memory, there are 3 options...
  15. Q

    2021 Mercury 115 Pro XS cavitating

    Looks like you’ve got the prop vented at the pvs plugs. That’s what’s happening.
  16. Q

    Yamaha 1992 40hp 2 stroke

    As said. Oil alarm and temp alarm are the usual culprits. I’d suspect it’s possibly overheating
  17. Q

    Single click no start 4.3 volvo penta gl-e

    Take the plugs out and try
  18. Q

    2021 Mercury 115 Pro XS cavitating

    Just in addition. This can also happen if the prop isn’t far enough home and able to seal next to this sealing ring. What prop is on it now ? But see if you can see where the back of the prop is in relation to this white seal ring. definitely take the prop off and have a look of there is any...
  19. Q

    2021 Mercury 115 Pro XS cavitating

    Hi. I think I might know what this is. Although I thought they had sorted the issue by the time your motor was made. But certainly on earlier models like mine 2016 and just after…this was the known issue with them. So behind the prop is a white plastic exhaust bore seal ring. Terrible design...
  20. Q

    1995 Talari 190 4.3 with 1.84 ratio 205HP

    Fair play Scott. I’m maybe being un fair. I haven’t tried any recently on any of the boats I have now.
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