Charlens23
Recruit
- Joined
- Jan 24, 2017
- Messages
- 1
everyone, I'm new to this page as well as being pretty new to boat engines as well. I have an older Merc 2 stroke that I just purchased and took out for the first time yesterday. Rode her out about 30 minutes to my job site, topping out at only about 3/4 throttle. Docked her up and went to work. On the way in we decided to open it up and it ran flawless at WOT for approx 2-3 mins and then died back to around 1/2 throttle. We drove it in at that throttle without ever taking it all the way back to neutral. A few times we dialed back the throttle and raised it again with no results. However, when we made it back to the landing, after putting it in neutral and then back into gear it ran full throttle for another 20-30 seconds before dying back again. The first time it died back I checked my primer bulb and it was soft, but when I squeezed it a little fuel leaked from where it connects to the engine. We only tried that once or twice and didn't force the issue, just limped home. What's weird is when the power came back it came back just as strong. The fuel is maybe a year old but the tank has always been kept full. My boss seems to think it's the switch box. He's had a few boats and was riding with me when it happened. Said he had something similar on another Merc two stroke. A lot of forum reading last nigh has me believing I should siphon the tank and change the fuel filters and lines and run everything fresh before buying a power pack. I will add that the guy I bought the boat from said he DID replace the fuel filters and fuel lines when he purchased the boat in august 2016. Thanks in advance guys, I believe I gave as much info as I have. I'll check the model number on the engine when I get home to make sure it is exactly what we think it is. I believe it's the 3cylinder big bore. Thanks again.
