1972 Johnson 125 horse outboard issues

[V153]

What was your compression?

 

[Mfribley]

No Title

V153 I cannot remember the compression right off hand my father in law checked it for me he told me what it was and that it was good as well as spark there are a few small bugs left to work out and then I will let the wife tackle re doing the upholstery and the interior I take care of the mechanical and she does the visual lol but here is a pic of the boat

 

[jimmbo]

Looks like a flip of a Glastron T166

 

[Mfribley]

It has been awhile since I have been on honestly a lot going on in my personal life and really haven't had much time to work on my project boat

After I my last post I finally did get a chance to get the boat on the water with the muffs on and the hose hooked up it was running smoothly I was able to go from an idle and up the throttle with no issues however I took it out on Saturday and as I was giving it throttle it would bog down to much throttle and it would stall out slowly throttling it up it would chug then finally catch and start going so Sunday I pulled the carbs off cleaned the jets cleaned the ports and carbs re assembled them and out them back on they look to be synced at a glance she fired up stayed running and ran a lot better in the water but my current issues are

Still bogging down a bit on a cool engine then smoothes out and accelerates great. However after a few min of faster speeds it'll just die out

I saw a comment about engine tune and feel stupid but could someone explain to me how to use it I have never heard of it... Also I was told that the carbs have and adjustment screw to sync the carbs and that of even 1 carb is a few MM off it'll cause these problems

So if someone could explain how to do it or even where the screws are or a picture of them it would be great

Thank you for all the advice thus far and in advance for the coming advice it has been a huge help

Mike