1990 Mercury | 2-stroke | 15hp
Greetings All!
I just got my first boat last year, its the family boat that came with a 1990 2-stroke and its been always been with the family. My grandfather took great care of it and I love the motor, however, I have a few things I would like to address to try and learn more about my motor. Disclaimer: I am a little bit mechanically inclined, but not for boat motors. More times than not, the motor works great, it always wants to start on the first pull or two, I can get it down to ~1.5mph and its nice and quiet. However there are a few things I wanted to mention to see what I can start fixing/troubleshooting: Concerns: 1). The motor does not want to start in the rain or on super humid/muggy days -- it can take 100 pulls before I can get it to start sometimes -- a couple times I couldn't get her started at all. 2). On regular days (not rainy or muggy), the motor will start no problem, but as soon as I give it any gas it can choke out -- its happened three times already this year in the handful of trips I've made out so far. So I end up incrementally increasing the throttle very, very slowly, once I get to a certain speed it won't ever choke out. But I have to put it in drive and slowly open up the throttle, this can take up to 5 minutes of slowly increasing the gas. 3). The choke has a knob that I can turn to increase or decrease idle speed -- it works but there is a serious delay on how responsive it is. This lag or poor responsiveness could also be applied to the throttle itself. I can floor it and it takes about 5-7 seconds before it really opens up. Maintenance that I am aware of: 1). Flushed and refilled the lower gear fluid 2). Spark plug is only 1 year old 3). Impeller is only 1 year old 4). I haven't opened the carb yet and I don't know how long its been since thats been cleaned. Now my initial reaction is I should probably open up the carb and check out the wear and tear. But I need some help on what else I can do to troubleshoot or correct the issues mentioned above. Appreciate any help in advance! https://cimg0.ibsrv.net/gimg/www.mer...8ec4a1a93a.jpg https://cimg1.ibsrv.net/gimg/www.mer...3a88640388.jpg https://cimg2.ibsrv.net/gimg/www.mer...e079b2ae35.jpg https://cimg3.ibsrv.net/gimg/www.mer...bf6031fd14.jpg https://cimg4.ibsrv.net/gimg/www.mer...aa3a7ed2f8.jpg |
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